Finding the Third Proportional to 57,028 and 89,459

Step by Step Solution

1. Step 1: Write the proportion equation
   57,028 : 89,459 = 89,459 : x
2. Step 2: Convert to fraction form
   57,028/89,459 = 89,459/x
3. Step 3: Cross multiply
   57,028x = 89,459 × 89,459
4. Step 4: Simplify right side
   57,028x = 8,002,912,681
5. Step 5: Solve for x
   x = 8,002,912,681/57,028
6. Step 6: Final answer
   x = 140,333.04