Given the following XML:
<tr>
<td>Map</td>
<td>First</td>
<td>Second</td>
<td>Third</td>
</tr>
these XPaths (second by suggestion from @paul t.)
//tr/td[text()='Map']/following-sibling::td[3]/text()
//tr[td='Map']/td[4]/text()
return 'Third'
as expected.