Finding the Third Proportional to 339,228 and 524,782.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,228 : 524,782.50 = 524,782.50 : x
2. Step 2: Convert to fraction form
   339,228/524,782.50 = 524,782.50/x
3. Step 3: Cross multiply
   339,228x = 524,782.50 × 524,782.50
4. Step 4: Simplify right side
   339,228x = 275,396,672,306.25
5. Step 5: Solve for x
   x = 275,396,672,306.25/339,228
6. Step 6: Final answer
   x = 811,833.55