Finding the Third Proportional to 12,700 and 18,568.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,700 : 18,568.50 = 18,568.50 : x
2. Step 2: Convert to fraction form
   12,700/18,568.50 = 18,568.50/x
3. Step 3: Cross multiply
   12,700x = 18,568.50 × 18,568.50
4. Step 4: Simplify right side
   12,700x = 344,789,192.25
5. Step 5: Solve for x
   x = 344,789,192.25/12,700
6. Step 6: Final answer
   x = 27,148.76