Finding the Third Proportional to 11,145 and 14,449.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,145 : 14,449.50 = 14,449.50 : x
2. Step 2: Convert to fraction form
   11,145/14,449.50 = 14,449.50/x
3. Step 3: Cross multiply
   11,145x = 14,449.50 × 14,449.50
4. Step 4: Simplify right side
   11,145x = 208,788,050.25
5. Step 5: Solve for x
   x = 208,788,050.25/11,145
6. Step 6: Final answer
   x = 18,733.79