Finding the Third Proportional to 1,396,422 and 2,135,214

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,422 : 2,135,214 = 2,135,214 : x
2. Step 2: Convert to fraction form
   1,396,422/2,135,214 = 2,135,214/x
3. Step 3: Cross multiply
   1,396,422x = 2,135,214 × 2,135,214
4. Step 4: Simplify right side
   1,396,422x = 4,559,138,825,796
5. Step 5: Solve for x
   x = 4,559,138,825,796/1,396,422
6. Step 6: Final answer
   x = 3,264,871.81