Finding the Third Proportional to 985,698 and 2,118,618

Step by Step Solution

1. Step 1: Write the proportion equation
   985,698 : 2,118,618 = 2,118,618 : x
2. Step 2: Convert to fraction form
   985,698/2,118,618 = 2,118,618/x
3. Step 3: Cross multiply
   985,698x = 2,118,618 × 2,118,618
4. Step 4: Simplify right side
   985,698x = 4,488,542,229,924
5. Step 5: Solve for x
   x = 4,488,542,229,924/985,698
6. Step 6: Final answer
   x = 4,553,668.80