Finding the Third Proportional to 11,940.75 and 21,007.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,940.75 : 21,007.69 = 21,007.69 : x
2. Step 2: Convert to fraction form
   11,940.75/21,007.69 = 21,007.69/x
3. Step 3: Cross multiply
   11,940.75x = 21,007.69 × 21,007.69
4. Step 4: Simplify right side
   11,940.75x = 441,322,934.10
5. Step 5: Solve for x
   x = 441,322,934.10/11,940.75
6. Step 6: Final answer
   x = 36,959.40