The result of your conversion between thermie and pound/cubic yard appears here
To convert between Thermie and Pound/cubic Yard you have to do the following:
First divide 4185800 / 0.45359237/((0.0037854118/231)*1728*27) = 7055395.87907132
Then multiply the amount of Thermie you want to convert to Pound/cubic Yard, use the chart below to guide you.
Symbol: th
No description
Symbol: lb/yd³
No description