Finding the Third Proportional to 443,288 and 664,760

Step by Step Solution

1. Step 1: Write the proportion equation
   443,288 : 664,760 = 664,760 : x
2. Step 2: Convert to fraction form
   443,288/664,760 = 664,760/x
3. Step 3: Cross multiply
   443,288x = 664,760 × 664,760
4. Step 4: Simplify right side
   443,288x = 441,905,857,600
5. Step 5: Solve for x
   x = 441,905,857,600/443,288
6. Step 6: Final answer
   x = 996,882.07