Finding the Third Proportional to 13,788.56 and 18,145.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,788.56 : 18,145.69 = 18,145.69 : x
2. Step 2: Convert to fraction form
   13,788.56/18,145.69 = 18,145.69/x
3. Step 3: Cross multiply
   13,788.56x = 18,145.69 × 18,145.69
4. Step 4: Simplify right side
   13,788.56x = 329,265,974.85
5. Step 5: Solve for x
   x = 329,265,974.85/13,788.56
6. Step 6: Final answer
   x = 23,879.64