Finding the Third Proportional to 31,179,848,517 and 72,755,494,344

Step by Step Solution

1. Step 1: Write the proportion equation
   31,179,848,517 : 72,755,494,344 = 72,755,494,344 : x
2. Step 2: Convert to fraction form
   31,179,848,517/72,755,494,344 = 72,755,494,344/x
3. Step 3: Cross multiply
   31,179,848,517x = 72,755,494,344 × 72,755,494,344
4. Step 4: Simplify right side
   31,179,848,517x = 5,293,361,957,239,815,929,856
5. Step 5: Solve for x
   x = 5,293,361,957,239,815,929,856/31,179,848,517
6. Step 6: Final answer
   x = 169,768,687,437.78