Finding the Third Proportional to 12,720.48 and 18,700.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,720.48 : 18,700.56 = 18,700.56 : x
2. Step 2: Convert to fraction form
   12,720.48/18,700.56 = 18,700.56/x
3. Step 3: Cross multiply
   12,720.48x = 18,700.56 × 18,700.56
4. Step 4: Simplify right side
   12,720.48x = 349,710,891.72
5. Step 5: Solve for x
   x = 349,710,891.72/12,720.48
6. Step 6: Final answer
   x = 27,491.96