Finding the Third Proportional to 1,396,469 and 2,135,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,469 : 2,135,312 = 2,135,312 : x
2. Step 2: Convert to fraction form
   1,396,469/2,135,312 = 2,135,312/x
3. Step 3: Cross multiply
   1,396,469x = 2,135,312 × 2,135,312
4. Step 4: Simplify right side
   1,396,469x = 4,559,557,337,344
5. Step 5: Solve for x
   x = 4,559,557,337,344/1,396,469
6. Step 6: Final answer
   x = 3,265,061.62