Finding the Third Proportional to 1,396,398 and 2,135,208

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,398 : 2,135,208 = 2,135,208 : x
2. Step 2: Convert to fraction form
   1,396,398/2,135,208 = 2,135,208/x
3. Step 3: Cross multiply
   1,396,398x = 2,135,208 × 2,135,208
4. Step 4: Simplify right side
   1,396,398x = 4,559,113,203,264
5. Step 5: Solve for x
   x = 4,559,113,203,264/1,396,398
6. Step 6: Final answer
   x = 3,264,909.58