Finding the Third Proportional to 11,028 and 16,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,028 : 16,642.50 = 16,642.50 : x
2. Step 2: Convert to fraction form
   11,028/16,642.50 = 16,642.50/x
3. Step 3: Cross multiply
   11,028x = 16,642.50 × 16,642.50
4. Step 4: Simplify right side
   11,028x = 276,972,806.25
5. Step 5: Solve for x
   x = 276,972,806.25/11,028
6. Step 6: Final answer
   x = 25,115.42