Finding the Third Proportional to 60,330 and 91,499

Step by Step Solution

1. Step 1: Write the proportion equation
   60,330 : 91,499 = 91,499 : x
2. Step 2: Convert to fraction form
   60,330/91,499 = 91,499/x
3. Step 3: Cross multiply
   60,330x = 91,499 × 91,499
4. Step 4: Simplify right side
   60,330x = 8,372,067,001
5. Step 5: Solve for x
   x = 8,372,067,001/60,330
6. Step 6: Final answer
   x = 138,771.21