Finding the Third Proportional to 283,839 and 425,800.50

Step by Step Solution

1. Step 1: Write the proportion equation
   283,839 : 425,800.50 = 425,800.50 : x
2. Step 2: Convert to fraction form
   283,839/425,800.50 = 425,800.50/x
3. Step 3: Cross multiply
   283,839x = 425,800.50 × 425,800.50
4. Step 4: Simplify right side
   283,839x = 181,306,065,800.25
5. Step 5: Solve for x
   x = 181,306,065,800.25/283,839
6. Step 6: Final answer
   x = 638,763.76