Finding the Third Proportional to 4,859,876 and 7,723,856

Step by Step Solution

1. Step 1: Write the proportion equation
   4,859,876 : 7,723,856 = 7,723,856 : x
2. Step 2: Convert to fraction form
   4,859,876/7,723,856 = 7,723,856/x
3. Step 3: Cross multiply
   4,859,876x = 7,723,856 × 7,723,856
4. Step 4: Simplify right side
   4,859,876x = 59,657,951,508,736
5. Step 5: Solve for x
   x = 59,657,951,508,736/4,859,876
6. Step 6: Final answer
   x = 12,275,611.87