Final answer:
The population of Boston, rounded to the nearest thousand, is 17,206,000.
Step-by-step explanation:
To find the population of Boston, you can multiply the area of Boston by its population density. First, convert the area of 90 square miles to square feet by multiplying it by 27,878,400 (since there are 27,878,400 square feet in 1 square mile). This gives you an area of 2,509,856,000 square feet. Next, multiply the area by the population density of 6862 people per square mile to find the total population. So, 2,509,856,000 square feet multiplied by 6862 people per square mile equals 17,206,485,120 people. Finally, round this number to the nearest thousand to get a population of 17,206,000 for Boston.