Finding the Third Proportional to 1,396,459 and 2,135,270

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,459 : 2,135,270 = 2,135,270 : x
2. Step 2: Convert to fraction form
   1,396,459/2,135,270 = 2,135,270/x
3. Step 3: Cross multiply
   1,396,459x = 2,135,270 × 2,135,270
4. Step 4: Simplify right side
   1,396,459x = 4,559,377,972,900
5. Step 5: Solve for x
   x = 4,559,377,972,900/1,396,459
6. Step 6: Final answer
   x = 3,264,956.56