Finding the Third Proportional to 2,558,865 and 5,472,021

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558,865 : 5,472,021 = 5,472,021 : x
2. Step 2: Convert to fraction form
   2,558,865/5,472,021 = 5,472,021/x
3. Step 3: Cross multiply
   2,558,865x = 5,472,021 × 5,472,021
4. Step 4: Simplify right side
   2,558,865x = 29,943,013,824,441
5. Step 5: Solve for x
   x = 29,943,013,824,441/2,558,865
6. Step 6: Final answer
   x = 11,701,677.82