Finding the Third Proportional to 443,468 and 664,518

Step by Step Solution

1. Step 1: Write the proportion equation
   443,468 : 664,518 = 664,518 : x
2. Step 2: Convert to fraction form
   443,468/664,518 = 664,518/x
3. Step 3: Cross multiply
   443,468x = 664,518 × 664,518
4. Step 4: Simplify right side
   443,468x = 441,584,172,324
5. Step 5: Solve for x
   x = 441,584,172,324/443,468
6. Step 6: Final answer
   x = 995,752.05