Finding the Third Proportional to 10,804.50 and 13,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,804.50 : 13,288.50 = 13,288.50 : x
2. Step 2: Convert to fraction form
   10,804.50/13,288.50 = 13,288.50/x
3. Step 3: Cross multiply
   10,804.50x = 13,288.50 × 13,288.50
4. Step 4: Simplify right side
   10,804.50x = 176,584,232.25
5. Step 5: Solve for x
   x = 176,584,232.25/10,804.50
6. Step 6: Final answer
   x = 16,343.58