Finding the Third Proportional to 12,647.87 and 18,510.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.87 : 18,510.48 = 18,510.48 : x
2. Step 2: Convert to fraction form
   12,647.87/18,510.48 = 18,510.48/x
3. Step 3: Cross multiply
   12,647.87x = 18,510.48 × 18,510.48
4. Step 4: Simplify right side
   12,647.87x = 342,637,778.72
5. Step 5: Solve for x
   x = 342,637,778.72/12,647.87
6. Step 6: Final answer
   x = 27,090.56