Finding the Third Proportional to 3,655,220 and 7,920,616

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655,220 : 7,920,616 = 7,920,616 : x
2. Step 2: Convert to fraction form
   3,655,220/7,920,616 = 7,920,616/x
3. Step 3: Cross multiply
   3,655,220x = 7,920,616 × 7,920,616
4. Step 4: Simplify right side
   3,655,220x = 62,736,157,819,456
5. Step 5: Solve for x
   x = 62,736,157,819,456/3,655,220
6. Step 6: Final answer
   x = 17,163,442.37