Finding the Third Proportional to 87,111.50 and 122,674.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,111.50 : 122,674.50 = 122,674.50 : x
2. Step 2: Convert to fraction form
   87,111.50/122,674.50 = 122,674.50/x
3. Step 3: Cross multiply
   87,111.50x = 122,674.50 × 122,674.50
4. Step 4: Simplify right side
   87,111.50x = 15,049,032,950.25
5. Step 5: Solve for x
   x = 15,049,032,950.25/87,111.50
6. Step 6: Final answer
   x = 172,755.98