Finding the Third Proportional to 72,561 and 112,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,561 : 112,120.50 = 112,120.50 : x
2. Step 2: Convert to fraction form
   72,561/112,120.50 = 112,120.50/x
3. Step 3: Cross multiply
   72,561x = 112,120.50 × 112,120.50
4. Step 4: Simplify right side
   72,561x = 12,571,006,520.25
5. Step 5: Solve for x
   x = 12,571,006,520.25/72,561
6. Step 6: Final answer
   x = 173,247.43