Center object in X axis, between two other objects

I need my PlayerController (which is generated dynamically) to have it's position updated each frame, so it is always centered between the center line and the anchor end.

Here is the code I am using right now:

using UnityEngine;
using System.Collections;

public class CenterPlayer : MonoBehaviour {

    private GameObject origin;
    private GameObject destination;
    private GameObject anchor;

    // Use this for initialization
    void Start () {
        origin = GameObject.Find("Origin");
        Debug.Log(origin);
        destination = GameObject.Find("Destination");
        anchor = GameObject.Find("Left");
    }
    
    // Update is called once per frame
    void Update () {
        float targetXposition = (((origin.transform.position.x + destination.transform.position.x) / 2f) + anchor.transform.position.x) / 2f;

        Vector3 position = transform.position; 
        this.transform.position = new Vector3(targetXposition, position.y, position.y);
    }

I have this script attached to the playerController. It doesn't work and I can't figure out why. The line will move sometimes and I need the player to be always centered between the line and the anchor.

The problem lies within this line of code:

float targetXposition = (((origin.transform.position.x + destination.transform.position.x) / 2f) + anchor.transform.position.x) / 2f;

What needs to happen is to obtain a direction vector, which is normalized, and then calculate the distance between the origin and destination, then scale the direction vector with half the distance like so:

Vector3 direction = (origin.transform.position + destination.transform.position).normalized;
Vector3 relativePosition = direction * (0.5f * Vector3.Distance(origin.transform.position, destination.transform.position);

This provides a relative position in which adding your anchor point results in the finished calculation of the target position:

float targetXPosition = (anchor.transform.position + relativePosition).x;