Finding the Third Proportional to 404,768 and 870,766

Step by Step Solution

1. Step 1: Write the proportion equation
   404,768 : 870,766 = 870,766 : x
2. Step 2: Convert to fraction form
   404,768/870,766 = 870,766/x
3. Step 3: Cross multiply
   404,768x = 870,766 × 870,766
4. Step 4: Simplify right side
   404,768x = 758,233,426,756
5. Step 5: Solve for x
   x = 758,233,426,756/404,768
6. Step 6: Final answer
   x = 1,873,254.37