Finding the Third Proportional to 988,670 and 2,158,564

Step by Step Solution

1. Step 1: Write the proportion equation
   988,670 : 2,158,564 = 2,158,564 : x
2. Step 2: Convert to fraction form
   988,670/2,158,564 = 2,158,564/x
3. Step 3: Cross multiply
   988,670x = 2,158,564 × 2,158,564
4. Step 4: Simplify right side
   988,670x = 4,659,398,542,096
5. Step 5: Solve for x
   x = 4,659,398,542,096/988,670
6. Step 6: Final answer
   x = 4,712,794.50