Finding the Third Proportional to 11,603.88 and 17,431.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,603.88 : 17,431.45 = 17,431.45 : x
2. Step 2: Convert to fraction form
   11,603.88/17,431.45 = 17,431.45/x
3. Step 3: Cross multiply
   11,603.88x = 17,431.45 × 17,431.45
4. Step 4: Simplify right side
   11,603.88x = 303,855,558.05
5. Step 5: Solve for x
   x = 303,855,558.05/11,603.88
6. Step 6: Final answer
   x = 26,185.68