Finding the Third Proportional to 634,400 and 1,428,496

Step by Step Solution

1. Step 1: Write the proportion equation
   634,400 : 1,428,496 = 1,428,496 : x
2. Step 2: Convert to fraction form
   634,400/1,428,496 = 1,428,496/x
3. Step 3: Cross multiply
   634,400x = 1,428,496 × 1,428,496
4. Step 4: Simplify right side
   634,400x = 2,040,600,822,016
5. Step 5: Solve for x
   x = 2,040,600,822,016/634,400
6. Step 6: Final answer
   x = 3,216,583.89