Finding the Third Proportional to 87,563.50 and 138,676

Step by Step Solution

1. Step 1: Write the proportion equation
   87,563.50 : 138,676 = 138,676 : x
2. Step 2: Convert to fraction form
   87,563.50/138,676 = 138,676/x
3. Step 3: Cross multiply
   87,563.50x = 138,676 × 138,676
4. Step 4: Simplify right side
   87,563.50x = 19,231,032,976
5. Step 5: Solve for x
   x = 19,231,032,976/87,563.50
6. Step 6: Final answer
   x = 219,623.85