Finding the Third Proportional to 857,728 and 1,261,648

Step by Step Solution

1. Step 1: Write the proportion equation
   857,728 : 1,261,648 = 1,261,648 : x
2. Step 2: Convert to fraction form
   857,728/1,261,648 = 1,261,648/x
3. Step 3: Cross multiply
   857,728x = 1,261,648 × 1,261,648
4. Step 4: Simplify right side
   857,728x = 1,591,755,675,904
5. Step 5: Solve for x
   x = 1,591,755,675,904/857,728
6. Step 6: Final answer
   x = 1,855,781.41