Cubes \( 1 \) and \( 2 \) are made of the same material. Cube \( 1 \) has edges of length \( L \) and is fully submerged in a fluid of density \( 0.5 \rho \). Cube \( 2 \) has edges of length \( 2L \) and is fully submerged in a fluid of density \( \rho \). The buoyant force on Cube \( 1 \) is \( F_{\text{B},1} \) and the buoyant force on Cube \( 2 \) is \( F_{\text{B},2} \). What is the ratio \( F_{\text{B},1} : F_{\text{B},2} \)?