Finding the Third Proportional to 2,175,638 and 4,712,866

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175,638 : 4,712,866 = 4,712,866 : x
2. Step 2: Convert to fraction form
   2,175,638/4,712,866 = 4,712,866/x
3. Step 3: Cross multiply
   2,175,638x = 4,712,866 × 4,712,866
4. Step 4: Simplify right side
   2,175,638x = 22,211,105,933,956
5. Step 5: Solve for x
   x = 22,211,105,933,956/2,175,638
6. Step 6: Final answer
   x = 10,209,008.09