Finding the Third Proportional to 155,919 and 251,104.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,919 : 251,104.50 = 251,104.50 : x
2. Step 2: Convert to fraction form
   155,919/251,104.50 = 251,104.50/x
3. Step 3: Cross multiply
   155,919x = 251,104.50 × 251,104.50
4. Step 4: Simplify right side
   155,919x = 63,053,469,920.25
5. Step 5: Solve for x
   x = 63,053,469,920.25/155,919
6. Step 6: Final answer
   x = 404,398.89