Finding the Third Proportional to 5,711.50 and 12,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,711.50 : 12,516.50 = 12,516.50 : x
2. Step 2: Convert to fraction form
   5,711.50/12,516.50 = 12,516.50/x
3. Step 3: Cross multiply
   5,711.50x = 12,516.50 × 12,516.50
4. Step 4: Simplify right side
   5,711.50x = 156,662,772.25
5. Step 5: Solve for x
   x = 156,662,772.25/5,711.50
6. Step 6: Final answer
   x = 27,429.36