Finding the Third Proportional to 72,658.50 and 109,059.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,658.50 : 109,059.75 = 109,059.75 : x
2. Step 2: Convert to fraction form
   72,658.50/109,059.75 = 109,059.75/x
3. Step 3: Cross multiply
   72,658.50x = 109,059.75 × 109,059.75
4. Step 4: Simplify right side
   72,658.50x = 11,894,029,070.06
5. Step 5: Solve for x
   x = 11,894,029,070.06/72,658.50
6. Step 6: Final answer
   x = 163,697.70