Finding the Third Proportional to 389,466 and 851,022

Step by Step Solution

1. Step 1: Write the proportion equation
   389,466 : 851,022 = 851,022 : x
2. Step 2: Convert to fraction form
   389,466/851,022 = 851,022/x
3. Step 3: Cross multiply
   389,466x = 851,022 × 851,022
4. Step 4: Simplify right side
   389,466x = 724,238,444,484
5. Step 5: Solve for x
   x = 724,238,444,484/389,466
6. Step 6: Final answer
   x = 1,859,567.83