Preheat the oven to 350 degrees F. Spray a 9x13 inch pan with nonstick baking spray.
In a bowl, whisk together the flour, baking powder and salt.
In the bowl of your electric stand mixer (or using a hand held mixer), beat the butter and sugar until fluffy, about 5 minutes. Beat in the eggs one at a time. Beat in the zest, vanilla and lemon extracts. Add in the dry ingredients slowly, with the mixer on low speed. Beat until combined.
Pour the cake batter in the 9x13 dish. Bake the cake for 25 to 30 minutes, or until the center is set.
When the cake is done, let it cool completely. Use a fork and poke holes all over the top.
Whisk together the whole milk, condensed milk and evaporated milk. Pour the milks all over the top of the cake. It will soak into the cake.
To make the whipped cream, beat the heavy cream with the sugar and extracts until peaks form. Spread the whipped cream on top of the cake. I like to refrigerate this for at least 1 hour before serving, or longer! Store the cake in the fridge when not serving it.