Finding the Third Proportional to 199,538 and 443,361

Step by Step Solution

1. Step 1: Write the proportion equation
   199,538 : 443,361 = 443,361 : x
2. Step 2: Convert to fraction form
   199,538/443,361 = 443,361/x
3. Step 3: Cross multiply
   199,538x = 443,361 × 443,361
4. Step 4: Simplify right side
   199,538x = 196,568,976,321
5. Step 5: Solve for x
   x = 196,568,976,321/199,538
6. Step 6: Final answer
   x = 985,120.51