Finding the Third Proportional to 1,236,438 and 2,605,716

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,438 : 2,605,716 = 2,605,716 : x
2. Step 2: Convert to fraction form
   1,236,438/2,605,716 = 2,605,716/x
3. Step 3: Cross multiply
   1,236,438x = 2,605,716 × 2,605,716
4. Step 4: Simplify right side
   1,236,438x = 6,789,755,872,656
5. Step 5: Solve for x
   x = 6,789,755,872,656/1,236,438
6. Step 6: Final answer
   x = 5,491,384.02