Finding the Third Proportional to 206,066 and 443,155

Step by Step Solution

1. Step 1: Write the proportion equation
   206,066 : 443,155 = 443,155 : x
2. Step 2: Convert to fraction form
   206,066/443,155 = 443,155/x
3. Step 3: Cross multiply
   206,066x = 443,155 × 443,155
4. Step 4: Simplify right side
   206,066x = 196,386,354,025
5. Step 5: Solve for x
   x = 196,386,354,025/206,066
6. Step 6: Final answer
   x = 953,026.48