Finding the Third Proportional to 202,438 and 443,012

Step by Step Solution

1. Step 1: Write the proportion equation
   202,438 : 443,012 = 443,012 : x
2. Step 2: Convert to fraction form
   202,438/443,012 = 443,012/x
3. Step 3: Cross multiply
   202,438x = 443,012 × 443,012
4. Step 4: Simplify right side
   202,438x = 196,259,632,144
5. Step 5: Solve for x
   x = 196,259,632,144/202,438
6. Step 6: Final answer
   x = 969,480.20