Finding the Third Proportional to 199,528 and 443,345

Step by Step Solution

1. Step 1: Write the proportion equation
   199,528 : 443,345 = 443,345 : x
2. Step 2: Convert to fraction form
   199,528/443,345 = 443,345/x
3. Step 3: Cross multiply
   199,528x = 443,345 × 443,345
4. Step 4: Simplify right side
   199,528x = 196,554,789,025
5. Step 5: Solve for x
   x = 196,554,789,025/199,528
6. Step 6: Final answer
   x = 985,098.78