Finding the Third Proportional to 6,645,940 and 9,957,856

Step by Step Solution

1. Step 1: Write the proportion equation
   6,645,940 : 9,957,856 = 9,957,856 : x
2. Step 2: Convert to fraction form
   6,645,940/9,957,856 = 9,957,856/x
3. Step 3: Cross multiply
   6,645,940x = 9,957,856 × 9,957,856
4. Step 4: Simplify right side
   6,645,940x = 99,158,896,116,736
5. Step 5: Solve for x
   x = 99,158,896,116,736/6,645,940
6. Step 6: Final answer
   x = 14,920,221.39