Finding the Third Proportional to 87,471.50 and 139,252

Step by Step Solution

1. Step 1: Write the proportion equation
   87,471.50 : 139,252 = 139,252 : x
2. Step 2: Convert to fraction form
   87,471.50/139,252 = 139,252/x
3. Step 3: Cross multiply
   87,471.50x = 139,252 × 139,252
4. Step 4: Simplify right side
   87,471.50x = 19,391,119,504
5. Step 5: Solve for x
   x = 19,391,119,504/87,471.50
6. Step 6: Final answer
   x = 221,685.00