Finding the Third Proportional to 109,662.50 and 239,156

Step by Step Solution

1. Step 1: Write the proportion equation
   109,662.50 : 239,156 = 239,156 : x
2. Step 2: Convert to fraction form
   109,662.50/239,156 = 239,156/x
3. Step 3: Cross multiply
   109,662.50x = 239,156 × 239,156
4. Step 4: Simplify right side
   109,662.50x = 57,195,592,336
5. Step 5: Solve for x
   x = 57,195,592,336/109,662.50
6. Step 6: Final answer
   x = 521,560.17