Finding the Third Proportional to 328,388.50 and 707,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,388.50 : 707,435.50 = 707,435.50 : x
2. Step 2: Convert to fraction form
   328,388.50/707,435.50 = 707,435.50/x
3. Step 3: Cross multiply
   328,388.50x = 707,435.50 × 707,435.50
4. Step 4: Simplify right side
   328,388.50x = 500,464,986,660.25
5. Step 5: Solve for x
   x = 500,464,986,660.25/328,388.50
6. Step 6: Final answer
   x = 1,524,002.78