How to get a point along an object x distance away from its pivot

I have an object which has an anchor point or pivot on the middle right. At any given time I want to know what the Vector3 position is of the object’s middle left. Like this:

alt text

As you can see, let’s say for example the pivot/anchor is at (7.3, 10.4, 0). I want to know what the Vector3 point is of where the blue star is. I know that the width of this object is 0.4f units wide.

What is the formula needed to calculate this point? I have a feeling it’s got something to do with using transform.right? no?

transform.right * 0.4f; // Right
-transform.right * 0.4f; // Left