Finding the Third Proportional to 3,149,128 and 4,722,872

Step by Step Solution

1. Step 1: Write the proportion equation
   3,149,128 : 4,722,872 = 4,722,872 : x
2. Step 2: Convert to fraction form
   3,149,128/4,722,872 = 4,722,872/x
3. Step 3: Cross multiply
   3,149,128x = 4,722,872 × 4,722,872
4. Step 4: Simplify right side
   3,149,128x = 22,305,519,928,384
5. Step 5: Solve for x
   x = 22,305,519,928,384/3,149,128
6. Step 6: Final answer
   x = 7,083,078.21