Finding the Third Proportional to 11,469.94 and 16,991.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,469.94 : 16,991.72 = 16,991.72 : x
2. Step 2: Convert to fraction form
   11,469.94/16,991.72 = 16,991.72/x
3. Step 3: Cross multiply
   11,469.94x = 16,991.72 × 16,991.72
4. Step 4: Simplify right side
   11,469.94x = 288,718,506.08
5. Step 5: Solve for x
   x = 288,718,506.08/11,469.94
6. Step 6: Final answer
   x = 25,171.76