Finding the Third Proportional to 7,069.78 and 11,313.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,069.78 : 11,313.42 = 11,313.42 : x
2. Step 2: Convert to fraction form
   7,069.78/11,313.42 = 11,313.42/x
3. Step 3: Cross multiply
   7,069.78x = 11,313.42 × 11,313.42
4. Step 4: Simplify right side
   7,069.78x = 127,993,514.52
5. Step 5: Solve for x
   x = 127,993,514.52/7,069.78
6. Step 6: Final answer
   x = 18,104.31