Finding the Third Proportional to 202,270 and 443,419

Step by Step Solution

1. Step 1: Write the proportion equation
   202,270 : 443,419 = 443,419 : x
2. Step 2: Convert to fraction form
   202,270/443,419 = 443,419/x
3. Step 3: Cross multiply
   202,270x = 443,419 × 443,419
4. Step 4: Simplify right side
   202,270x = 196,620,409,561
5. Step 5: Solve for x
   x = 196,620,409,561/202,270
6. Step 6: Final answer
   x = 972,069.06