\x{92} is not very readable. To support that point, I bet noone even noticed you used the wrong number. (It should be C2.) \N provides a more readable mechanism:

use charnames ':full';
my $str = "Th\N{LATIN CAPITAL LETTER A WITH CIRCUMFLEX}t \N{LATIN CAPI
+TAL LETTER A WITH CIRCUMFLEX}pple";
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It's pretty long, but shortcuts are provided and you can create your own.