Finding the Third Proportional to 11,886.75 and 18,147.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,886.75 : 18,147.38 = 18,147.38 : x
2. Step 2: Convert to fraction form
   11,886.75/18,147.38 = 18,147.38/x
3. Step 3: Cross multiply
   11,886.75x = 18,147.38 × 18,147.38
4. Step 4: Simplify right side
   11,886.75x = 329,327,219.39
5. Step 5: Solve for x
   x = 329,327,219.39/11,886.75
6. Step 6: Final answer
   x = 27,705.40