We show that the amplitude of the second acoustic peak in the newly released BOOMERANG-98 and MAXIMA-I data is compatible with the standard primordial nucleosynthesis and with the locally broken-scale-invariant matter power spectrum suggested by recent measurements of the power spectrum in the range \(20 - 200\) Mpc. If the slope of matter density perturbations on large scales is \(n \approx 1\), the Hubble constant is \(0.5< h < 0.75\), and r.m.s. mass fluctuations at 8 Mpc are \(0.65 \le \sigma_8 \le 0.75\), then for a Universe approximately 14 Gyr old our best fit within the nucleosynthesis bound \(\Omega_Bh^2= 0.019 \pm 0.0024\) requires \(0.3 \le \Omega_m \le 0.5\). Cluster abundances further constraint the matter density to be \(\Omega_m \approx 0.3\). The CMB data alone are not able to determine the detailed form of the matter power spectrum in the range \(0.03