You could do something like this.
.capx
If you are new to lerp() then look in the FAQ section, there are some great explanations there about it.
What you can change in this example to make it fit your needs is the "speed" of the lerp, which is the 5 in 5*dt
You can also play around with maybe making the end size of the sprite vary depending on the click position. Thats the Sprite.originalHeight/2 you can change (and width to).
Hope it helps.