New York--Internet marketing company USWeb/CKS announced Friday it has agreed to acquire Mitchell Madison Group, a management consulting firm focused on business-to-business, in a stock deal valued at $307.8 million. Mitchell Madison has 550 consultants and specializes in consulting with financial institutions about technology and sourcing. The deal is expected to accelerate USWeb/CKS' expansion into strategy consulting. Tom Steiner, managing partner of Mitchell Madison, will become president-COO of USWeb/CKS when the deal closes. Robert Shaw will remain CEO of USWeb/CKS.