Finding the Third Proportional to 57,457.50 and 89,175

Step by Step Solution

1. Step 1: Write the proportion equation
   57,457.50 : 89,175 = 89,175 : x
2. Step 2: Convert to fraction form
   57,457.50/89,175 = 89,175/x
3. Step 3: Cross multiply
   57,457.50x = 89,175 × 89,175
4. Step 4: Simplify right side
   57,457.50x = 7,952,180,625
5. Step 5: Solve for x
   x = 7,952,180,625/57,457.50
6. Step 6: Final answer
   x = 138,401.09