Finding the Third Proportional to 296,467 and 443,890

Step by Step Solution

1. Step 1: Write the proportion equation
   296,467 : 443,890 = 443,890 : x
2. Step 2: Convert to fraction form
   296,467/443,890 = 443,890/x
3. Step 3: Cross multiply
   296,467x = 443,890 × 443,890
4. Step 4: Simplify right side
   296,467x = 197,038,332,100
5. Step 5: Solve for x
   x = 197,038,332,100/296,467
6. Step 6: Final answer
   x = 664,621.47