Finding the Third Proportional to 1,822,656 and 3,988,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822,656 : 3,988,440 = 3,988,440 : x
2. Step 2: Convert to fraction form
   1,822,656/3,988,440 = 3,988,440/x
3. Step 3: Cross multiply
   1,822,656x = 3,988,440 × 3,988,440
4. Step 4: Simplify right side
   1,822,656x = 15,907,653,633,600
5. Step 5: Solve for x
   x = 15,907,653,633,600/1,822,656
6. Step 6: Final answer
   x = 8,727,732.29