Finding the Third Proportional to 11,439 and 17,189.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,439 : 17,189.25 = 17,189.25 : x
2. Step 2: Convert to fraction form
   11,439/17,189.25 = 17,189.25/x
3. Step 3: Cross multiply
   11,439x = 17,189.25 × 17,189.25
4. Step 4: Simplify right side
   11,439x = 295,470,315.56
5. Step 5: Solve for x
   x = 295,470,315.56/11,439
6. Step 6: Final answer
   x = 25,830.08