Finding the Third Proportional to 1,822,808 and 3,988,891

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,808 : 3,988,891 = 3,988,891 : x
2. Step 2: Convert to fraction form
   1,822,808/3,988,891 = 3,988,891/x
3. Step 3: Cross multiply
   1,822,808x = 3,988,891 × 3,988,891
4. Step 4: Simplify right side
   1,822,808x = 15,911,251,409,881
5. Step 5: Solve for x
   x = 15,911,251,409,881/1,822,808
6. Step 6: Final answer
   x = 8,728,978.26