Finding the Third Proportional to 12,031.50 and 18,516.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,031.50 : 18,516.75 = 18,516.75 : x
2. Step 2: Convert to fraction form
   12,031.50/18,516.75 = 18,516.75/x
3. Step 3: Cross multiply
   12,031.50x = 18,516.75 × 18,516.75
4. Step 4: Simplify right side
   12,031.50x = 342,870,030.56
5. Step 5: Solve for x
   x = 342,870,030.56/12,031.50
6. Step 6: Final answer
   x = 28,497.70