Finding the Third Proportional to 916 and 1,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   916 : 1,540.50 = 1,540.50 : x
2. Step 2: Convert to fraction form
   916/1,540.50 = 1,540.50/x
3. Step 3: Cross multiply
   916x = 1,540.50 × 1,540.50
4. Step 4: Simplify right side
   916x = 2,373,140.25
5. Step 5: Solve for x
   x = 2,373,140.25/916
6. Step 6: Final answer
   x = 2,590.76