Finding the Third Proportional to 513.50 and 1,108

Step by Step Solution

1. Step 1: Write the proportion equation
   513.50 : 1,108 = 1,108 : x
2. Step 2: Convert to fraction form
   513.50/1,108 = 1,108/x
3. Step 3: Cross multiply
   513.50x = 1,108 × 1,108
4. Step 4: Simplify right side
   513.50x = 1,227,664
5. Step 5: Solve for x
   x = 1,227,664/513.50
6. Step 6: Final answer
   x = 2,390.78