Finding the Third Proportional to 13,618.13 and 18,199.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,618.13 : 18,199.69 = 18,199.69 : x
2. Step 2: Convert to fraction form
   13,618.13/18,199.69 = 18,199.69/x
3. Step 3: Cross multiply
   13,618.13x = 18,199.69 × 18,199.69
4. Step 4: Simplify right side
   13,618.13x = 331,228,625.10
5. Step 5: Solve for x
   x = 331,228,625.10/13,618.13
6. Step 6: Final answer
   x = 24,322.63