Finding the Third Proportional to 1,396,458 and 2,135,268

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,458 : 2,135,268 = 2,135,268 : x
2. Step 2: Convert to fraction form
   1,396,458/2,135,268 = 2,135,268/x
3. Step 3: Cross multiply
   1,396,458x = 2,135,268 × 2,135,268
4. Step 4: Simplify right side
   1,396,458x = 4,559,369,431,824
5. Step 5: Solve for x
   x = 4,559,369,431,824/1,396,458
6. Step 6: Final answer
   x = 3,264,952.78