Finding the Third Proportional to 206,919 and 443,355

Step by Step Solution

1. Step 1: Write the proportion equation
   206,919 : 443,355 = 443,355 : x
2. Step 2: Convert to fraction form
   206,919/443,355 = 443,355/x
3. Step 3: Cross multiply
   206,919x = 443,355 × 443,355
4. Step 4: Simplify right side
   206,919x = 196,563,656,025
5. Step 5: Solve for x
   x = 196,563,656,025/206,919
6. Step 6: Final answer
   x = 949,954.60