The conversion from gallons to liters is equal to 1:3.785 respectively.
So therefore, if we have a specified number of gallons like we do in this question, we can multiply by 3.785 to find the number of liters:
![1.3x10^(15)gallons*3.785=4.92x10^(15) liters](https://img.qammunity.org/2019/formulas/mathematics/middle-school/dm4czz0nihsrvngmtl996a75wc8xse7ilm.png)
Therefore, Lake Michigan holds
of water.