Finding the Third Proportional to 288,514 and 613,892

Step by Step Solution

1. Step 1: Write the proportion equation
   288,514 : 613,892 = 613,892 : x
2. Step 2: Convert to fraction form
   288,514/613,892 = 613,892/x
3. Step 3: Cross multiply
   288,514x = 613,892 × 613,892
4. Step 4: Simplify right side
   288,514x = 376,863,387,664
5. Step 5: Solve for x
   x = 376,863,387,664/288,514
6. Step 6: Final answer
   x = 1,306,222.19