Finding the Third Proportional to 7,836,170 and 12,108,870

Step by Step Solution

1. Step 1: Write the proportion equation
   7,836,170 : 12,108,870 = 12,108,870 : x
2. Step 2: Convert to fraction form
   7,836,170/12,108,870 = 12,108,870/x
3. Step 3: Cross multiply
   7,836,170x = 12,108,870 × 12,108,870
4. Step 4: Simplify right side
   7,836,170x = 146,624,732,676,900
5. Step 5: Solve for x
   x = 146,624,732,676,900/7,836,170
6. Step 6: Final answer
   x = 18,711,275.11