Finding the Third Proportional to 988,451 and 2,158,180

Step by Step Solution

1. Step 1: Write the proportion equation
   988,451 : 2,158,180 = 2,158,180 : x
2. Step 2: Convert to fraction form
   988,451/2,158,180 = 2,158,180/x
3. Step 3: Cross multiply
   988,451x = 2,158,180 × 2,158,180
4. Step 4: Simplify right side
   988,451x = 4,657,740,912,400
5. Step 5: Solve for x
   x = 4,657,740,912,400/988,451
6. Step 6: Final answer
   x = 4,712,161.67