Finding the Third Proportional to 53,391,944,718 and 72,710,715,336

Step by Step Solution

1. Step 1: Write the proportion equation
   53,391,944,718 : 72,710,715,336 = 72,710,715,336 : x
2. Step 2: Convert to fraction form
   53,391,944,718/72,710,715,336 = 72,710,715,336/x
3. Step 3: Cross multiply
   53,391,944,718x = 72,710,715,336 × 72,710,715,336
4. Step 4: Simplify right side
   53,391,944,718x = 5,286,848,124,672,825,884,672
5. Step 5: Solve for x
   x = 5,286,848,124,672,825,884,672/53,391,944,718
6. Step 6: Final answer
   x = 99,019,583,433.35