A full reading for Rat × Capricorn meeting Dragon × Leo is on the way. In the meantime, the score above is computed from the canonical element matrix and sign-cycle distance, and the profiles below cover each side individually.
Power for its own sake, and the cold brutal solitary serenity that accompanies such an exalted position, are precisely what the Rat/Capricorn lives for. If they think they've seen goals-oriented people in action before, they haven't seen anything until they've seen the Rat in you breeze past them on your way to the top, in such a way as to make Genghis Khan seem mild-mannered, of whatever hierarchy to which you see fit to belong.
Don't give in to your tendency to go too far! If the Dragon/Leo stretches its claw out to seize what you consider to be rightfully yours, you may very well draw back a bloody stump, unless you put in some reconnaissance effort first. You are the consummate Dragon king, but don't let everyone else know this in so many words, or you'll be a ruler without subjects.