Finding the Third Proportional to 1,396,671 and 2,231,520

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,671 : 2,231,520 = 2,231,520 : x
2. Step 2: Convert to fraction form
   1,396,671/2,231,520 = 2,231,520/x
3. Step 3: Cross multiply
   1,396,671x = 2,231,520 × 2,231,520
4. Step 4: Simplify right side
   1,396,671x = 4,979,681,510,400
5. Step 5: Solve for x
   x = 4,979,681,510,400/1,396,671
6. Step 6: Final answer
   x = 3,565,393.36