Finding the Third Proportional to 417 and 1,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   417 : 1,011.50 = 1,011.50 : x
2. Step 2: Convert to fraction form
   417/1,011.50 = 1,011.50/x
3. Step 3: Cross multiply
   417x = 1,011.50 × 1,011.50
4. Step 4: Simplify right side
   417x = 1,023,132.25
5. Step 5: Solve for x
   x = 1,023,132.25/417
6. Step 6: Final answer
   x = 2,453.55