Finding the Third Proportional to 2,091,420 and 4,566,618

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091,420 : 4,566,618 = 4,566,618 : x
2. Step 2: Convert to fraction form
   2,091,420/4,566,618 = 4,566,618/x
3. Step 3: Cross multiply
   2,091,420x = 4,566,618 × 4,566,618
4. Step 4: Simplify right side
   2,091,420x = 20,853,999,957,924
5. Step 5: Solve for x
   x = 20,853,999,957,924/2,091,420
6. Step 6: Final answer
   x = 9,971,215.71