Finding the Third Proportional to 115,456.50 and 251,811

Step by Step Solution

1. Step 1: Write the proportion equation
   115,456.50 : 251,811 = 251,811 : x
2. Step 2: Convert to fraction form
   115,456.50/251,811 = 251,811/x
3. Step 3: Cross multiply
   115,456.50x = 251,811 × 251,811
4. Step 4: Simplify right side
   115,456.50x = 63,408,779,721
5. Step 5: Solve for x
   x = 63,408,779,721/115,456.50
6. Step 6: Final answer
   x = 549,200.61