Finding the Third Proportional to 55,384 and 85,900

Step by Step Solution

1. Step 1: Write the proportion equation
   55,384 : 85,900 = 85,900 : x
2. Step 2: Convert to fraction form
   55,384/85,900 = 85,900/x
3. Step 3: Cross multiply
   55,384x = 85,900 × 85,900
4. Step 4: Simplify right side
   55,384x = 7,378,810,000
5. Step 5: Solve for x
   x = 7,378,810,000/55,384
6. Step 6: Final answer
   x = 133,229.99