Finding the Third Proportional to 4,061,618 and 8,920,443

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061,618 : 8,920,443 = 8,920,443 : x
2. Step 2: Convert to fraction form
   4,061,618/8,920,443 = 8,920,443/x
3. Step 3: Cross multiply
   4,061,618x = 8,920,443 × 8,920,443
4. Step 4: Simplify right side
   4,061,618x = 79,574,303,316,249
5. Step 5: Solve for x
   x = 79,574,303,316,249/4,061,618
6. Step 6: Final answer
   x = 19,591,774.34