Finding the Third Proportional to 155,963 and 328,223.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,963 : 328,223.50 = 328,223.50 : x
2. Step 2: Convert to fraction form
   155,963/328,223.50 = 328,223.50/x
3. Step 3: Cross multiply
   155,963x = 328,223.50 × 328,223.50
4. Step 4: Simplify right side
   155,963x = 107,730,665,952.25
5. Step 5: Solve for x
   x = 107,730,665,952.25/155,963
6. Step 6: Final answer
   x = 690,745.02