Finding the Third Proportional to 404,880 and 865,804

Step by Step Solution

1. Step 1: Write the proportion equation
   404,880 : 865,804 = 865,804 : x
2. Step 2: Convert to fraction form
   404,880/865,804 = 865,804/x
3. Step 3: Cross multiply
   404,880x = 865,804 × 865,804
4. Step 4: Simplify right side
   404,880x = 749,616,566,416
5. Step 5: Solve for x
   x = 749,616,566,416/404,880
6. Step 6: Final answer
   x = 1,851,453.68