Finding the Third Proportional to 64,318.50 and 91,747.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,318.50 : 91,747.75 = 91,747.75 : x
2. Step 2: Convert to fraction form
   64,318.50/91,747.75 = 91,747.75/x
3. Step 3: Cross multiply
   64,318.50x = 91,747.75 × 91,747.75
4. Step 4: Simplify right side
   64,318.50x = 8,417,649,630.06
5. Step 5: Solve for x
   x = 8,417,649,630.06/64,318.50
6. Step 6: Final answer
   x = 130,874.47