Finding the Third Proportional to 81,643,153,077 and 113,518,278,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,643,153,077 : 113,518,278,388.50 = 113,518,278,388.50 : x
2. Step 2: Convert to fraction form
   81,643,153,077/113,518,278,388.50 = 113,518,278,388.50/x
3. Step 3: Cross multiply
   81,643,153,077x = 113,518,278,388.50 × 113,518,278,388.50
4. Step 4: Simplify right side
   81,643,153,077x = 12,886,399,528,288,986,857,472
5. Step 5: Solve for x
   x = 12,886,399,528,288,986,857,472/81,643,153,077
6. Step 6: Final answer
   x = 157,838,092,266.42