Finding the Third Proportional to 3,290,672 and 7,211,616

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290,672 : 7,211,616 = 7,211,616 : x
2. Step 2: Convert to fraction form
   3,290,672/7,211,616 = 7,211,616/x
3. Step 3: Cross multiply
   3,290,672x = 7,211,616 × 7,211,616
4. Step 4: Simplify right side
   3,290,672x = 52,007,405,331,456
5. Step 5: Solve for x
   x = 52,007,405,331,456/3,290,672
6. Step 6: Final answer
   x = 15,804,493.83