Finding the Third Proportional to 3,670,210 and 7,871,770

Step by Step Solution

1. Step 1: Write the proportion equation
   3,670,210 : 7,871,770 = 7,871,770 : x
2. Step 2: Convert to fraction form
   3,670,210/7,871,770 = 7,871,770/x
3. Step 3: Cross multiply
   3,670,210x = 7,871,770 × 7,871,770
4. Step 4: Simplify right side
   3,670,210x = 61,964,762,932,900
5. Step 5: Solve for x
   x = 61,964,762,932,900/3,670,210
6. Step 6: Final answer
   x = 16,883,165.52