Final answer:
To express the number 19,006,423 as a modern number, we can rewrite it in scientific notation as 1.9006423 x 10⁷.
Step-by-step explanation:
To express the number 19,006,423 as a modern number, we can rewrite it in scientific notation. Scientific notation is a way to shorten large or small numbers by writing them as a coefficient multiplied by a power of 10.
In this case, we can write 19,006,423 as 1.9006423 x 10⁷.
The coefficient is obtained by moving the decimal point to the left until it is to the left of the first non-zero digit, and the exponent is the number of places the decimal point was moved.
Therefore, the number 19,006,423 can be expressed as 1.9006423 x 10⁷.