Finding the Third Proportional to 57,257.82 and 89,158.69

Step by Step Solution

1. Step 1: Write the proportion equation
   57,257.82 : 89,158.69 = 89,158.69 : x
2. Step 2: Convert to fraction form
   57,257.82/89,158.69 = 89,158.69/x
3. Step 3: Cross multiply
   57,257.82x = 89,158.69 × 89,158.69
4. Step 4: Simplify right side
   57,257.82x = 7,949,272,601.55
5. Step 5: Solve for x
   x = 7,949,272,601.55/57,257.82
6. Step 6: Final answer
   x = 138,832.95