Finding the Third Proportional to 7,791.19 and 13,015.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,791.19 : 13,015.69 = 13,015.69 : x
2. Step 2: Convert to fraction form
   7,791.19/13,015.69 = 13,015.69/x
3. Step 3: Cross multiply
   7,791.19x = 13,015.69 × 13,015.69
4. Step 4: Simplify right side
   7,791.19x = 169,408,121.10
5. Step 5: Solve for x
   x = 169,408,121.10/7,791.19
6. Step 6: Final answer
   x = 21,743.56