Finding the Third Proportional to 68,435.72 and 91,542.66

Step by Step Solution

1. Step 1: Write the proportion equation
   68,435.72 : 91,542.66 = 91,542.66 : x
2. Step 2: Convert to fraction form
   68,435.72/91,542.66 = 91,542.66/x
3. Step 3: Cross multiply
   68,435.72x = 91,542.66 × 91,542.66
4. Step 4: Simplify right side
   68,435.72x = 8,380,057,913.31
5. Step 5: Solve for x
   x = 8,380,057,913.31/68,435.72
6. Step 6: Final answer
   x = 122,451.52