Finding the Third Proportional to 11,238 and 14,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,238 : 14,911.50 = 14,911.50 : x
2. Step 2: Convert to fraction form
   11,238/14,911.50 = 14,911.50/x
3. Step 3: Cross multiply
   11,238x = 14,911.50 × 14,911.50
4. Step 4: Simplify right side
   11,238x = 222,352,832.25
5. Step 5: Solve for x
   x = 222,352,832.25/11,238
6. Step 6: Final answer
   x = 19,785.80