Finding the Third Proportional to 328,860 and 445,662

Step by Step Solution

1. Step 1: Write the proportion equation
   328,860 : 445,662 = 445,662 : x
2. Step 2: Convert to fraction form
   328,860/445,662 = 445,662/x
3. Step 3: Cross multiply
   328,860x = 445,662 × 445,662
4. Step 4: Simplify right side
   328,860x = 198,614,618,244
5. Step 5: Solve for x
   x = 198,614,618,244/328,860
6. Step 6: Final answer
   x = 603,948.85