Finding the Third Proportional to 52,008.75 and 80,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,008.75 : 80,689.50 = 80,689.50 : x
2. Step 2: Convert to fraction form
   52,008.75/80,689.50 = 80,689.50/x
3. Step 3: Cross multiply
   52,008.75x = 80,689.50 × 80,689.50
4. Step 4: Simplify right side
   52,008.75x = 6,510,795,410.25
5. Step 5: Solve for x
   x = 6,510,795,410.25/52,008.75
6. Step 6: Final answer
   x = 125,186.54