First, we balance the chemical equation for the first reaction:

HCOH + CHN = x

Since both HCOH and CHN contain only one carbon atom, we can write the equation as:

CH3OH + CH4N2 = x

Next, we balance the chemical equation for the second reaction:

x + H2O + HCl = C3H6O3

Since C3H6O3 contains three carbon atoms, we need to multiply the first reaction by 3 to balance the carbon atoms:

3CH3OH + 3CH4N2 = 3x

Now, we have the balanced equation:

3CH3OH + 3CH4N2 + H2O + HCl = C3H6O3