Finding the Third Proportional to 1,398,656 and 3,001,216

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,656 : 3,001,216 = 3,001,216 : x
2. Step 2: Convert to fraction form
   1,398,656/3,001,216 = 3,001,216/x
3. Step 3: Cross multiply
   1,398,656x = 3,001,216 × 3,001,216
4. Step 4: Simplify right side
   1,398,656x = 9,007,297,478,656
5. Step 5: Solve for x
   x = 9,007,297,478,656/1,398,656
6. Step 6: Final answer
   x = 6,439,966.28