Finding the Third Proportional to 19,369,578,426,380 and 42,687,293,777,418

Step by Step Solution

1. Step 1: Write the proportion equation
   19,369,578,426,380 : 42,687,293,777,418 = 42,687,293,777,418 : x
2. Step 2: Convert to fraction form
   19,369,578,426,380/42,687,293,777,418 = 42,687,293,777,418/x
3. Step 3: Cross multiply
   19,369,578,426,380x = 42,687,293,777,418 × 42,687,293,777,418
4. Step 4: Simplify right side
   19,369,578,426,380x = 1,822,205,050,039,589,523,186,253,824
5. Step 5: Solve for x
   x = 1,822,205,050,039,589,523,186,253,824/19,369,578,426,380
6. Step 6: Final answer
   x = 94,075,617,441,310.69