Finding the Third Proportional to 325,066.50 and 431,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   325,066.50 : 431,443.50 = 431,443.50 : x
2. Step 2: Convert to fraction form
   325,066.50/431,443.50 = 431,443.50/x
3. Step 3: Cross multiply
   325,066.50x = 431,443.50 × 431,443.50
4. Step 4: Simplify right side
   325,066.50x = 186,143,493,692.25
5. Step 5: Solve for x
   x = 186,143,493,692.25/325,066.50
6. Step 6: Final answer
   x = 572,632.04