Finding the Third Proportional to 3,670,220 and 7,871,790

Step by Step Solution

1. Step 1: Write the proportion equation
   3,670,220 : 7,871,790 = 7,871,790 : x
2. Step 2: Convert to fraction form
   3,670,220/7,871,790 = 7,871,790/x
3. Step 3: Cross multiply
   3,670,220x = 7,871,790 × 7,871,790
4. Step 4: Simplify right side
   3,670,220x = 61,965,077,804,100
5. Step 5: Solve for x
   x = 61,965,077,804,100/3,670,220
6. Step 6: Final answer
   x = 16,883,205.31