Final answer:
The number with the arithmetic square root of 3 is approximately 1.73205.
Step-by-step explanation:
To find the number with the arithmetic square root of 3, we can use the rule x² = √x. So, we need to find a number that, when squared, gives us 3. In this case, the number is √3.
Using a calculator, we can find that the approximate value of √3 is 1.73205.