Draw a Flowchart to find and print the sum of three numbers

Here is the flowchart to find and print the sum of three numbers:

```
START

Set sum = 0

Input first number
Input second number
Input third number

Add first number to sum
Add second number to sum
Add third number to sum

Print sum

STOP
```

Note: This flowchart assumes that the input and output processes are handled by the necessary programming language or system, and focuses on the logic of finding and calculating the sum of three numbers.