Finding the Third Proportional to 81,643,153,304 and 113,518,278,767

Step by Step Solution

1. Step 1: Write the proportion equation
   81,643,153,304 : 113,518,278,767 = 113,518,278,767 : x
2. Step 2: Convert to fraction form
   81,643,153,304/113,518,278,767 = 113,518,278,767/x
3. Step 3: Cross multiply
   81,643,153,304x = 113,518,278,767 × 113,518,278,767
4. Step 4: Simplify right side
   81,643,153,304x = 12,886,399,614,222,323,417,088
5. Step 5: Solve for x
   x = 12,886,399,614,222,323,417,088/81,643,153,304
6. Step 6: Final answer
   x = 157,838,092,880.12