Finding the Third Proportional to 13,015.69 and 16,288.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,015.69 : 16,288.59 = 16,288.59 : x
2. Step 2: Convert to fraction form
   13,015.69/16,288.59 = 16,288.59/x
3. Step 3: Cross multiply
   13,015.69x = 16,288.59 × 16,288.59
4. Step 4: Simplify right side
   13,015.69x = 265,318,286.35
5. Step 5: Solve for x
   x = 265,318,286.35/13,015.69
6. Step 6: Final answer
   x = 20,384.50