Finding the Third Proportional to 206,022 and 451,404

Step by Step Solution

1. Step 1: Write the proportion equation
   206,022 : 451,404 = 451,404 : x
2. Step 2: Convert to fraction form
   206,022/451,404 = 451,404/x
3. Step 3: Cross multiply
   206,022x = 451,404 × 451,404
4. Step 4: Simplify right side
   206,022x = 203,765,571,216
5. Step 5: Solve for x
   x = 203,765,571,216/206,022
6. Step 6: Final answer
   x = 989,047.63