مكان Place
is a  very general word for talking about where something or someone is
• the  place where they live. 								
•  Put this in a safe place
مكان Position
can be used to talk about the place where something is  in relation to other things or places
• the position of the table  in the room
موقع Location  
is used mainly in  formal or business English to talk about where a building is
• a  house in a central location 
•  the location of the new  headquarters