Finding the Third Proportional to 13,819.50 and 18,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,819.50 : 18,418.50 = 18,418.50 : x
2. Step 2: Convert to fraction form
   13,819.50/18,418.50 = 18,418.50/x
3. Step 3: Cross multiply
   13,819.50x = 18,418.50 × 18,418.50
4. Step 4: Simplify right side
   13,819.50x = 339,241,142.25
5. Step 5: Solve for x
   x = 339,241,142.25/13,819.50
6. Step 6: Final answer
   x = 24,548.00