Finding the Third Proportional to 72,577.50 and 112,146.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,577.50 : 112,146.75 = 112,146.75 : x
2. Step 2: Convert to fraction form
   72,577.50/112,146.75 = 112,146.75/x
3. Step 3: Cross multiply
   72,577.50x = 112,146.75 × 112,146.75
4. Step 4: Simplify right side
   72,577.50x = 12,576,893,535.56
5. Step 5: Solve for x
   x = 12,576,893,535.56/72,577.50
6. Step 6: Final answer
   x = 173,289.15