Finding the Third Proportional to 105,404 and 248,811

Step by Step Solution

1. Step 1: Write the proportion equation
   105,404 : 248,811 = 248,811 : x
2. Step 2: Convert to fraction form
   105,404/248,811 = 248,811/x
3. Step 3: Cross multiply
   105,404x = 248,811 × 248,811
4. Step 4: Simplify right side
   105,404x = 61,906,913,721
5. Step 5: Solve for x
   x = 61,906,913,721/105,404
6. Step 6: Final answer
   x = 587,329.83