I have 80000 miles. (Automatic) Car will not shift from 2nd to third.

What is your question?

I am driving 40-50mph and my car will not shift from 2nd to third automatically. Then, when I was pulling into my drive the shift could be moved with my finger instead of grabbing the shifter and putting it into park. I tried to go in reverse but nothing is grabbing like there is no gear? and when I put the car into park the car will not stop rolling like nothing is working with the gears, or......? I had to use the emergency brake to keep the car from rolling. Brakes work fine, but it seems like something in the transmission, linkage, cable, sensor???? Anyone have any ideas?