Explanation:
1 pc = 206265 AU
[tex]1 AU = 1.496\times 10^{8} km[/tex]
Distance of an object A from the sun = 0.000001877 pc
[tex]0.000001877 pc=0.000001877\times 206265 AU=0.387159405 AU[/tex]
[tex]0.387159405 AU=0.387159405\times 1.496\times 10^{8} km=5.7919\times 10^7 km[/tex]
[tex]0.000001877 pc=5.7919\times 10^7 km[/tex]
Distance of an object B from the sun = 30.06 AU
[tex]30.06AU=30.06\times 1.496\times 10^{8} km=4.497\times 10^{9} km[/tex]
Distance of an object C from the sun = 778.3 million km
1 million km = [tex]10^6 km[/tex]
[tex]778.3 \text{million km}=778.3\times 10^6 km=7.783\times 10^8 km[/tex]