Finding the Third Proportional to 840,564 and 1,261,026

Step by Step Solution

1. Step 1: Write the proportion equation
   840,564 : 1,261,026 = 1,261,026 : x
2. Step 2: Convert to fraction form
   840,564/1,261,026 = 1,261,026/x
3. Step 3: Cross multiply
   840,564x = 1,261,026 × 1,261,026
4. Step 4: Simplify right side
   840,564x = 1,590,186,572,676
5. Step 5: Solve for x
   x = 1,590,186,572,676/840,564
6. Step 6: Final answer
   x = 1,891,809.04