Finding the Third Proportional to 12,415.78 and 18,741.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,415.78 : 18,741.38 = 18,741.38 : x
2. Step 2: Convert to fraction form
   12,415.78/18,741.38 = 18,741.38/x
3. Step 3: Cross multiply
   12,415.78x = 18,741.38 × 18,741.38
4. Step 4: Simplify right side
   12,415.78x = 351,239,136.89
5. Step 5: Solve for x
   x = 351,239,136.89/12,415.78
6. Step 6: Final answer
   x = 28,289.73