(2) 154 1 billion,172.6 billion,193.3 billion, a * * * 520 billion.

Solution: Let the growth rate be X and the gross national product in 10 be Y, then,

1376( 1+x)=y

( 1+x)y= 1726

X=0. 1 1998 can be used to be accurate to 1%=0. 12.

So I know,

In 20 10, the GNP was 154 10 billion yuan, and in 20 12, it was193.3 billion yuan, which was 520 billion yuan.