Finding the Third Proportional to 8,266.39 and 12,418.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,266.39 : 12,418.27 = 12,418.27 : x
2. Step 2: Convert to fraction form
   8,266.39/12,418.27 = 12,418.27/x
3. Step 3: Cross multiply
   8,266.39x = 12,418.27 × 12,418.27
4. Step 4: Simplify right side
   8,266.39x = 154,213,503.04
5. Step 5: Solve for x
   x = 154,213,503.04/8,266.39
6. Step 6: Final answer
   x = 18,655.48