Finding the Third Proportional to 671,986 and 1,040,478

Step by Step Solution

1. Step 1: Write the proportion equation
   671,986 : 1,040,478 = 1,040,478 : x
2. Step 2: Convert to fraction form
   671,986/1,040,478 = 1,040,478/x
3. Step 3: Cross multiply
   671,986x = 1,040,478 × 1,040,478
4. Step 4: Simplify right side
   671,986x = 1,082,594,468,484
5. Step 5: Solve for x
   x = 1,082,594,468,484/671,986
6. Step 6: Final answer
   x = 1,611,037.24