Finding the Third Proportional to 190,426 and 445,039

Step by Step Solution

1. Step 1: Write the proportion equation
   190,426 : 445,039 = 445,039 : x
2. Step 2: Convert to fraction form
   190,426/445,039 = 445,039/x
3. Step 3: Cross multiply
   190,426x = 445,039 × 445,039
4. Step 4: Simplify right side
   190,426x = 198,059,711,521
5. Step 5: Solve for x
   x = 198,059,711,521/190,426
6. Step 6: Final answer
   x = 1,040,087.55