What number multiplied by itself equals 678?

Here we will answer: What number multiplied by itself gives 678? In other words, what number times itself will equal 678?

We have identified many different ways of getting the answer to this question:

Algebra Method:
Make an algebra equation and solve for x:

x • x = 678
x ≈ 26.038

Square Root Method:
Take the square root of 678 to get the answer:

√678 ≈ 26.038

Exponent Method:
Make the base 678 and the exponent 0.5 to get the answer:

678^0.5 ≈ 26.038

There you go! Now you know how to calculate "What number multiplied by itself equals 678?"

The bottom line is that 26.038 times itself equals approximately 678 as illustrated here:

26.038 x 26.038 ≈ 678

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The answer on this page is rounded to the nearest thousandth, if necessary.