Finding the Third Proportional to 42,720 and 91,755

Step by Step Solution

1. Step 1: Write the proportion equation
   42,720 : 91,755 = 91,755 : x
2. Step 2: Convert to fraction form
   42,720/91,755 = 91,755/x
3. Step 3: Cross multiply
   42,720x = 91,755 × 91,755
4. Step 4: Simplify right side
   42,720x = 8,418,980,025
5. Step 5: Solve for x
   x = 8,418,980,025/42,720
6. Step 6: Final answer
   x = 197,073.50