Finding the Third Proportional to 8,498.36 and 13,131.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,498.36 : 13,131.49 = 13,131.49 : x
2. Step 2: Convert to fraction form
   8,498.36/13,131.49 = 13,131.49/x
3. Step 3: Cross multiply
   8,498.36x = 13,131.49 × 13,131.49
4. Step 4: Simplify right side
   8,498.36x = 172,436,087.07
5. Step 5: Solve for x
   x = 172,436,087.07/8,498.36
6. Step 6: Final answer
   x = 20,290.52