Finding the Third Proportional to 443,476 and 664,530

Step by Step Solution

1. Step 1: Write the proportion equation
   443,476 : 664,530 = 664,530 : x
2. Step 2: Convert to fraction form
   443,476/664,530 = 664,530/x
3. Step 3: Cross multiply
   443,476x = 664,530 × 664,530
4. Step 4: Simplify right side
   443,476x = 441,600,120,900
5. Step 5: Solve for x
   x = 441,600,120,900/443,476
6. Step 6: Final answer
   x = 995,770.05