$130.56.0.0/16$
NID = 16 bits , HID = 16 bits
so to divide into 1024 subnets we borrow 10 bits from HID
hence Subnet ID bits = 10(bold ones) , New HID = 6 bits
$130.56.\mathbf{00000000.00}000000/26$
First address of Subnet 3 = SID of Subnet 3 = $130.56.\mathbf{00000000.10}000000/26 = 130.56.0.128/26$
Last address of Subnet 3 = DBA of Subnet 3 = $130.56.\mathbf{00000000.10}111111/26 = 130.56.0.191/26$