Finding the Third Proportional to 1,397,872 and 3,057,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,872 : 3,057,456 = 3,057,456 : x
2. Step 2: Convert to fraction form
   1,397,872/3,057,456 = 3,057,456/x
3. Step 3: Cross multiply
   1,397,872x = 3,057,456 × 3,057,456
4. Step 4: Simplify right side
   1,397,872x = 9,348,037,191,936
5. Step 5: Solve for x
   x = 9,348,037,191,936/1,397,872
6. Step 6: Final answer
   x = 6,687,334.17