Finding the Third Proportional to 322,900 and 443,256

Step by Step Solution

1. Step 1: Write the proportion equation
   322,900 : 443,256 = 443,256 : x
2. Step 2: Convert to fraction form
   322,900/443,256 = 443,256/x
3. Step 3: Cross multiply
   322,900x = 443,256 × 443,256
4. Step 4: Simplify right side
   322,900x = 196,475,881,536
5. Step 5: Solve for x
   x = 196,475,881,536/322,900
6. Step 6: Final answer
   x = 608,472.84