Finding the Third Proportional to 1,822,872 and 3,988,980

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,872 : 3,988,980 = 3,988,980 : x
2. Step 2: Convert to fraction form
   1,822,872/3,988,980 = 3,988,980/x
3. Step 3: Cross multiply
   1,822,872x = 3,988,980 × 3,988,980
4. Step 4: Simplify right side
   1,822,872x = 15,911,961,440,400
5. Step 5: Solve for x
   x = 15,911,961,440,400/1,822,872
6. Step 6: Final answer
   x = 8,729,061.31