Yeah, we a bunch a slow guys.... some of us might want to know the root chord, the tip chord, the amount of leading edge sweep, the semi-span.. stuff like that.
Offhand, if the wing truly has a straight trailing edge...
The mac will be at 1/2 the span on one side. The length of the mac will be the root chord plus the tip chord, divided by 2.
The c.g when placed on this chord will appear to be aft of normal for a tapered or straight wing.