Finding the Third Proportional to 11,983.50 and 18,142.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,983.50 : 18,142.88 = 18,142.88 : x
2. Step 2: Convert to fraction form
   11,983.50/18,142.88 = 18,142.88/x
3. Step 3: Cross multiply
   11,983.50x = 18,142.88 × 18,142.88
4. Step 4: Simplify right side
   11,983.50x = 329,163,913.27
5. Step 5: Solve for x
   x = 329,163,913.27/11,983.50
6. Step 6: Final answer
   x = 27,468.09