Finding the Third Proportional to 11,438 and 17,155

Step by Step Solution

1. Step 1: Write the proportion equation
   11,438 : 17,155 = 17,155 : x
2. Step 2: Convert to fraction form
   11,438/17,155 = 17,155/x
3. Step 3: Cross multiply
   11,438x = 17,155 × 17,155
4. Step 4: Simplify right side
   11,438x = 294,294,025
5. Step 5: Solve for x
   x = 294,294,025/11,438
6. Step 6: Final answer
   x = 25,729.50