[com+]

Уж извольте, на быструю руку набросал, можете попробывать

Код:

procedure Sort( var AResult:array of Double);
var
  j: Integer;
  tmp : Double;
begin
  for j :=Low(AResult) to High(AResult) - 1 do
    if AResult[j] > AResult[j+1] Then
    begin
      tmp := AResult[j];
      AResult[j] := AResult[j+1];
      AResult[j+1] := tmp;
    end;
end;

procedure Find(const AArray: array of Double;  AFileName:String);
var
  Result: array [0..2] of Double;
  ind :Integer;
  f: Textfile;
begin
  Result[0] := 0; Result[1] := 0; Result[2] := 0;
  for ind:= Low(AArray) to High(AArray) do
  begin
    if AArray[ind] > Result[0] Then
    begin
      Result[0] := AArray[ind];
      Sort(Result);
    end;
  end;
  AssignFile(f, AFileName); {Assigns the Filename}
  ReWrite(f); {Create a new file named ek.txt}
  for ind:= Low(Result) to High(Result) do

    Writeln(f, Format('%8.3f', [Result[ind]]));
  Closefile(f); {Closes file F}
end;

Админ: Не забываем про теги!!

...
Find(In_Data, 'c:\1.txt'); // Найти и сохранить
...