Any good way for me to make money? See details for my skill levels.?

(My levels are: Attack: 50 Strength: 63 Defense: 53 Ranged: 32 Prayer: 37 Magic: 70 Runecraft: 28 Construction: 1 Dungeoneering: 21 Constitution: 57 Agility: 13 Herblore: 4 Thieving: 24 Crafting: 38 Fletching: 41 Slayer: 19 Hunter: 23 Mining:55 Smithing: 59 Fishing: 5 Cooking: 48 Firemaking: 46 Woodcutting: 75 Farming: 3 summoning: 5) I have 3,000,000gp, I have Granite Armour, I have a zammy staff and cape i have enough runes to cast flames of zammy 5000 times, i have food (lobby's), i am a member(of coarse^^^), i have a dragon hatchet, i have a dwarf multi cannon and a cannonball mold. please tell me what i can do to make money!!! i need 28,000,000gp so i can get 99 magic!!! if you help me i will add you and once i get 99 magic i will give you each 2,000,000(you have to have actually helped tho) PLEASE PLEASE PLEASE HELP MEE!!!!!!!!!!!!!! (if you have anyway to tell me how to get 99 in any skill or how to get 99 magic with out losing money that counts too) THANKS FOR ANYONE WHO HELPS!!!!