Finding the Third Proportional to 328,223.25 and 706,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,223.25 : 706,666.50 = 706,666.50 : x
2. Step 2: Convert to fraction form
   328,223.25/706,666.50 = 706,666.50/x
3. Step 3: Cross multiply
   328,223.25x = 706,666.50 × 706,666.50
4. Step 4: Simplify right side
   328,223.25x = 499,377,542,222.25
5. Step 5: Solve for x
   x = 499,377,542,222.25/328,223.25
6. Step 6: Final answer
   x = 1,521,456.94