Compare XML in Powershell

Compare 2 files and get line number

$abc = gc .\z.txt | %{$i = 1} { new-object psobject -prop @{LineNum=$i;Text=$_}; $i++ }
$cde = gc .\x.txt | %{$i = 1} { new-object psobject -prop @{LineNum=$i;Text=$_}; $i++ }
Compare-Object $abc $cde -Property Text -PassThru -IncludeEqual