Finding the Third Proportional to 11,403.50 and 18,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,403.50 : 18,216.50 = 18,216.50 : x
2. Step 2: Convert to fraction form
   11,403.50/18,216.50 = 18,216.50/x
3. Step 3: Cross multiply
   11,403.50x = 18,216.50 × 18,216.50
4. Step 4: Simplify right side
   11,403.50x = 331,840,872.25
5. Step 5: Solve for x
   x = 331,840,872.25/11,403.50
6. Step 6: Final answer
   x = 29,099.91