Three Concentric Circles

Three concentric circles $A,B,C$ have the property that the radius of $A$ is bigger than the radius of $B$, and the radius of $B$ is bigger than the radius of $C$. A chord of circle $B$ of length $2$ is drawn such that it is tangent to circle $C$; a chord of circle $A$ of length $x$ is drawn such that it is tangent to circle $B$. If the area between circle $A$ and $B$ is $2014$ times the area between circle $B$ and circle $C$, then the value of $x$ can be expressed as $\sqrt{a}$ for some positive integer $a$. Find the last three digits of $a$.