Finding the Third Proportional to 13,015.69 and 16,635.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,015.69 : 16,635.38 = 16,635.38 : x
2. Step 2: Convert to fraction form
   13,015.69/16,635.38 = 16,635.38/x
3. Step 3: Cross multiply
   13,015.69x = 16,635.38 × 16,635.38
4. Step 4: Simplify right side
   13,015.69x = 276,735,701.39
5. Step 5: Solve for x
   x = 276,735,701.39/13,015.69
6. Step 6: Final answer
   x = 21,261.70