Finding the Third Proportional to 9,870,416 and 13,446,766

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870,416 : 13,446,766 = 13,446,766 : x
2. Step 2: Convert to fraction form
   9,870,416/13,446,766 = 13,446,766/x
3. Step 3: Cross multiply
   9,870,416x = 13,446,766 × 13,446,766
4. Step 4: Simplify right side
   9,870,416x = 180,815,515,858,756
5. Step 5: Solve for x
   x = 180,815,515,858,756/9,870,416
6. Step 6: Final answer
   x = 18,318,935.68