Finding the Third Proportional to 298,216 and 443,274

Step by Step Solution

1. Step 1: Write the proportion equation
   298,216 : 443,274 = 443,274 : x
2. Step 2: Convert to fraction form
   298,216/443,274 = 443,274/x
3. Step 3: Cross multiply
   298,216x = 443,274 × 443,274
4. Step 4: Simplify right side
   298,216x = 196,491,839,076
5. Step 5: Solve for x
   x = 196,491,839,076/298,216
6. Step 6: Final answer
   x = 658,891.00