Finding the Third Proportional to 57,604.50 and 90,168.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,604.50 : 90,168.75 = 90,168.75 : x
2. Step 2: Convert to fraction form
   57,604.50/90,168.75 = 90,168.75/x
3. Step 3: Cross multiply
   57,604.50x = 90,168.75 × 90,168.75
4. Step 4: Simplify right side
   57,604.50x = 8,130,403,476.56
5. Step 5: Solve for x
   x = 8,130,403,476.56/57,604.50
6. Step 6: Final answer
   x = 141,141.81