Finding the Third Proportional to 204,642 and 443,428

Step by Step Solution

1. Step 1: Write the proportion equation
   204,642 : 443,428 = 443,428 : x
2. Step 2: Convert to fraction form
   204,642/443,428 = 443,428/x
3. Step 3: Cross multiply
   204,642x = 443,428 × 443,428
4. Step 4: Simplify right side
   204,642x = 196,628,391,184
5. Step 5: Solve for x
   x = 196,628,391,184/204,642
6. Step 6: Final answer
   x = 960,840.84