Finding the Third Proportional to 57,172.50 and 88,872.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,172.50 : 88,872.75 = 88,872.75 : x
2. Step 2: Convert to fraction form
   57,172.50/88,872.75 = 88,872.75/x
3. Step 3: Cross multiply
   57,172.50x = 88,872.75 × 88,872.75
4. Step 4: Simplify right side
   57,172.50x = 7,898,365,692.56
5. Step 5: Solve for x
   x = 7,898,365,692.56/57,172.50
6. Step 6: Final answer
   x = 138,149.73