Finding the Third Proportional to 1,221,682 and 2,605,610

Step by Step Solution

1. Step 1: Write the proportion equation
   1,221,682 : 2,605,610 = 2,605,610 : x
2. Step 2: Convert to fraction form
   1,221,682/2,605,610 = 2,605,610/x
3. Step 3: Cross multiply
   1,221,682x = 2,605,610 × 2,605,610
4. Step 4: Simplify right side
   1,221,682x = 6,789,203,472,100
5. Step 5: Solve for x
   x = 6,789,203,472,100/1,221,682
6. Step 6: Final answer
   x = 5,557,259.15