Finding the Third Proportional to 268,229 and 558,499

Step by Step Solution

1. Step 1: Write the proportion equation
   268,229 : 558,499 = 558,499 : x
2. Step 2: Convert to fraction form
   268,229/558,499 = 558,499/x
3. Step 3: Cross multiply
   268,229x = 558,499 × 558,499
4. Step 4: Simplify right side
   268,229x = 311,921,133,001
5. Step 5: Solve for x
   x = 311,921,133,001/268,229
6. Step 6: Final answer
   x = 1,162,891.16