Finding the Third Proportional to 840,820 and 1,208,742

Step by Step Solution

1. Step 1: Write the proportion equation
   840,820 : 1,208,742 = 1,208,742 : x
2. Step 2: Convert to fraction form
   840,820/1,208,742 = 1,208,742/x
3. Step 3: Cross multiply
   840,820x = 1,208,742 × 1,208,742
4. Step 4: Simplify right side
   840,820x = 1,461,057,222,564
5. Step 5: Solve for x
   x = 1,461,057,222,564/840,820
6. Step 6: Final answer
   x = 1,737,657.55