Finding the Third Proportional to 339,568 and 707,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,568 : 707,040.50 = 707,040.50 : x
2. Step 2: Convert to fraction form
   339,568/707,040.50 = 707,040.50/x
3. Step 3: Cross multiply
   339,568x = 707,040.50 × 707,040.50
4. Step 4: Simplify right side
   339,568x = 499,906,268,640.25
5. Step 5: Solve for x
   x = 499,906,268,640.25/339,568
6. Step 6: Final answer
   x = 1,472,183.09