Before you put in a tube, feel around the inside of the tire to see if any pins, thorns, nails, or staples will present any rough points to the tube, or you will have the same problem again. Often in a lawn tractor, for instance, there are so many thorns and stickers that you can't get them all out, so the liquid tire sealer is the best approach.
Regarding seating the tire on the rim after the bead has broken:
I haven't done this myself, but have heard of it being done. Take out the valve core and squirt a few teaspoons of gasoline into the tire. Wait a minute, and light it with a match. The resulting small explosion will expand the tire to the rim, where a compressor might not put out the volume to overcome the leaks... I've heard that Mexican mechanics use this technique a lot, without problems. Someday I might try it......
Andy in Fink, Texas