This is actually incorrect. Just as for a normal Throw, the range/distance of the throw is measured from the Model being thrown, not from your own base.
So, if you are Double-handed throwing your opponent, you can choose a target in
LOS of your jack (ignoring the model you are throwing), then measure the distance between the model you are throwing, and your target - if it is in range (half your strength in Inches), you make a Melee attack roll to see if you hit directly, and go from there.
Infernal Confirmation:
http://privateerpressforums.com/showthread.php?122396-Double-Handed-Throws