Finding the Third Proportional to 302,885 and 443,311

Step by Step Solution

1. Step 1: Write the proportion equation
   302,885 : 443,311 = 443,311 : x
2. Step 2: Convert to fraction form
   302,885/443,311 = 443,311/x
3. Step 3: Cross multiply
   302,885x = 443,311 × 443,311
4. Step 4: Simplify right side
   302,885x = 196,524,642,721
5. Step 5: Solve for x
   x = 196,524,642,721/302,885
6. Step 6: Final answer
   x = 648,842.44