Finding the Third Proportional to 283,707 and 439,267.50

Step by Step Solution

1. Step 1: Write the proportion equation
   283,707 : 439,267.50 = 439,267.50 : x
2. Step 2: Convert to fraction form
   283,707/439,267.50 = 439,267.50/x
3. Step 3: Cross multiply
   283,707x = 439,267.50 × 439,267.50
4. Step 4: Simplify right side
   283,707x = 192,955,936,556.25
5. Step 5: Solve for x
   x = 192,955,936,556.25/283,707
6. Step 6: Final answer
   x = 680,123.99