Finding the Third Proportional to 199,540 and 443,366

Step by Step Solution

1. Step 1: Write the proportion equation
   199,540 : 443,366 = 443,366 : x
2. Step 2: Convert to fraction form
   199,540/443,366 = 443,366/x
3. Step 3: Cross multiply
   199,540x = 443,366 × 443,366
4. Step 4: Simplify right side
   199,540x = 196,573,409,956
5. Step 5: Solve for x
   x = 196,573,409,956/199,540
6. Step 6: Final answer
   x = 985,132.86