Finding the Third Proportional to 404,876 and 868,666

Step by Step Solution

1. Step 1: Write the proportion equation
   404,876 : 868,666 = 868,666 : x
2. Step 2: Convert to fraction form
   404,876/868,666 = 868,666/x
3. Step 3: Cross multiply
   404,876x = 868,666 × 868,666
4. Step 4: Simplify right side
   404,876x = 754,580,619,556
5. Step 5: Solve for x
   x = 754,580,619,556/404,876
6. Step 6: Final answer
   x = 1,863,732.65