Finding the Third Proportional to 56,287 and 85,591

Step by Step Solution

1. Step 1: Write the proportion equation
   56,287 : 85,591 = 85,591 : x
2. Step 2: Convert to fraction form
   56,287/85,591 = 85,591/x
3. Step 3: Cross multiply
   56,287x = 85,591 × 85,591
4. Step 4: Simplify right side
   56,287x = 7,325,819,281
5. Step 5: Solve for x
   x = 7,325,819,281/56,287
6. Step 6: Final answer
   x = 130,151.18