Finding the Third Proportional to 2,611.50 and 5,717

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.50 : 5,717 = 5,717 : x
2. Step 2: Convert to fraction form
   2,611.50/5,717 = 5,717/x
3. Step 3: Cross multiply
   2,611.50x = 5,717 × 5,717
4. Step 4: Simplify right side
   2,611.50x = 32,684,089
5. Step 5: Solve for x
   x = 32,684,089/2,611.50
6. Step 6: Final answer
   x = 12,515.45