Finding the Third Proportional to 1,397,864 and 3,057,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,864 : 3,057,440 = 3,057,440 : x
2. Step 2: Convert to fraction form
   1,397,864/3,057,440 = 3,057,440/x
3. Step 3: Cross multiply
   1,397,864x = 3,057,440 × 3,057,440
4. Step 4: Simplify right side
   1,397,864x = 9,347,939,353,600
5. Step 5: Solve for x
   x = 9,347,939,353,600/1,397,864
6. Step 6: Final answer
   x = 6,687,302.45