Finding the Third Proportional to 203,438 and 443,040

Step by Step Solution

1. Step 1: Write the proportion equation
   203,438 : 443,040 = 443,040 : x
2. Step 2: Convert to fraction form
   203,438/443,040 = 443,040/x
3. Step 3: Cross multiply
   203,438x = 443,040 × 443,040
4. Step 4: Simplify right side
   203,438x = 196,284,441,600
5. Step 5: Solve for x
   x = 196,284,441,600/203,438
6. Step 6: Final answer
   x = 964,836.67