To find the total number of marbles in the 5 jars, you need to multiply the number of marbles in one jar by the number of jars:
\[ \text{Total marbles} = \text{Number of jars} \times \text{Marbles per jar} \]
Given that there are 5 jars and each jar contains 691,094 marbles, we can calculate:
\[ \text{Total marbles} = 5 \times 691,094 \]
Now performing the multiplication:
\[ 5 \times 691,094 = 3,455,470 \]
Thus, the total number of marbles in all the jars is
\[ \boxed{3,455,470} \]