Finding the Third Proportional to 283,570.50 and 613,689

Step by Step Solution

1. Step 1: Write the proportion equation
   283,570.50 : 613,689 = 613,689 : x
2. Step 2: Convert to fraction form
   283,570.50/613,689 = 613,689/x
3. Step 3: Cross multiply
   283,570.50x = 613,689 × 613,689
4. Step 4: Simplify right side
   283,570.50x = 376,614,188,721
5. Step 5: Solve for x
   x = 376,614,188,721/283,570.50
6. Step 6: Final answer
   x = 1,328,114.84