Finding the Third Proportional to 3,621,216 and 7,938,816

Step by Step Solution

1. Step 1: Write the proportion equation
   3,621,216 : 7,938,816 = 7,938,816 : x
2. Step 2: Convert to fraction form
   3,621,216/7,938,816 = 7,938,816/x
3. Step 3: Cross multiply
   3,621,216x = 7,938,816 × 7,938,816
4. Step 4: Simplify right side
   3,621,216x = 63,024,799,481,856
5. Step 5: Solve for x
   x = 63,024,799,481,856/3,621,216
6. Step 6: Final answer
   x = 17,404,319.29