Finding the Third Proportional to 53,391,944,694 and 72,710,715,300

Step by Step Solution

1. Step 1: Write the proportion equation
   53,391,944,694 : 72,710,715,300 = 72,710,715,300 : x
2. Step 2: Convert to fraction form
   53,391,944,694/72,710,715,300 = 72,710,715,300/x
3. Step 3: Cross multiply
   53,391,944,694x = 72,710,715,300 × 72,710,715,300
4. Step 4: Simplify right side
   53,391,944,694x = 5,286,848,119,437,653,966,848
5. Step 5: Solve for x
   x = 5,286,848,119,437,653,966,848/53,391,944,694
6. Step 6: Final answer
   x = 99,019,583,379.81