Consolidate Over 60,000 Rows

I have three worksheets with a large amount of data on them (~60,000 lines). The column titles and layout are exactly the same. I need to either 1) Get all of the data into one worksheet so I can create a standard pivot table, or 2) Analyze all of the information using a multiple consolidation range pivot. When I try to copy the data from one spreadsheet to another I get an error message stating the copy area is a different size or shape from the paste area, even though it is not. When I try to create a pivot table using multiple consolidation ranges the fields returned are Column, Row, etc instead of the data fields I would expect (the column titles - exactly the same in each worksheet).