Finding the Third Proportional to 1,299,649 and 2,898,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,649 : 2,898,128 = 2,898,128 : x
2. Step 2: Convert to fraction form
   1,299,649/2,898,128 = 2,898,128/x
3. Step 3: Cross multiply
   1,299,649x = 2,898,128 × 2,898,128
4. Step 4: Simplify right side
   1,299,649x = 8,399,145,904,384
5. Step 5: Solve for x
   x = 8,399,145,904,384/1,299,649
6. Step 6: Final answer
   x = 6,462,626.37