
\documentclass{article}
  \usepackage{array}
  \usepackage{varwidth}
  \pagestyle{empty}

\begin{document}
\begin{tabular}{l V{3.5cm} r}
  foo & blah      & bar \\
  foo & blah blah & bar \\
  foo & blah blah blah blah blah blah
                  & bar \\
\end{tabular}
\end{document}
