Finding the Third Proportional to 404,870 and 865,802

Step by Step Solution

1. Step 1: Write the proportion equation
   404,870 : 865,802 = 865,802 : x
2. Step 2: Convert to fraction form
   404,870/865,802 = 865,802/x
3. Step 3: Cross multiply
   404,870x = 865,802 × 865,802
4. Step 4: Simplify right side
   404,870x = 749,613,103,204
5. Step 5: Solve for x
   x = 749,613,103,204/404,870
6. Step 6: Final answer
   x = 1,851,490.86