Finding the Third Proportional to 3,865,220 and 8,198,152

Step by Step Solution

1. Step 1: Write the proportion equation
   3,865,220 : 8,198,152 = 8,198,152 : x
2. Step 2: Convert to fraction form
   3,865,220/8,198,152 = 8,198,152/x
3. Step 3: Cross multiply
   3,865,220x = 8,198,152 × 8,198,152
4. Step 4: Simplify right side
   3,865,220x = 67,209,696,215,104
5. Step 5: Solve for x
   x = 67,209,696,215,104/3,865,220
6. Step 6: Final answer
   x = 17,388,323.62