Finding the Third Proportional to 389,468 and 851,026

Step by Step Solution

1. Step 1: Write the proportion equation
   389,468 : 851,026 = 851,026 : x
2. Step 2: Convert to fraction form
   389,468/851,026 = 851,026/x
3. Step 3: Cross multiply
   389,468x = 851,026 × 851,026
4. Step 4: Simplify right side
   389,468x = 724,245,252,676
5. Step 5: Solve for x
   x = 724,245,252,676/389,468
6. Step 6: Final answer
   x = 1,859,575.76