Finding the Third Proportional to 72,564.75 and 112,128.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,564.75 : 112,128.75 = 112,128.75 : x
2. Step 2: Convert to fraction form
   72,564.75/112,128.75 = 112,128.75/x
3. Step 3: Cross multiply
   72,564.75x = 112,128.75 × 112,128.75
4. Step 4: Simplify right side
   72,564.75x = 12,572,856,576.56
5. Step 5: Solve for x
   x = 12,572,856,576.56/72,564.75
6. Step 6: Final answer
   x = 173,263.97