Finding the Third Proportional to 328,501.50 and 363,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,501.50 : 363,061.50 = 363,061.50 : x
2. Step 2: Convert to fraction form
   328,501.50/363,061.50 = 363,061.50/x
3. Step 3: Cross multiply
   328,501.50x = 363,061.50 × 363,061.50
4. Step 4: Simplify right side
   328,501.50x = 131,813,652,782.25
5. Step 5: Solve for x
   x = 131,813,652,782.25/328,501.50
6. Step 6: Final answer
   x = 401,257.38