Finding the Third Proportional to 2,578,506 and 5,368,917

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,506 : 5,368,917 = 5,368,917 : x
2. Step 2: Convert to fraction form
   2,578,506/5,368,917 = 5,368,917/x
3. Step 3: Cross multiply
   2,578,506x = 5,368,917 × 5,368,917
4. Step 4: Simplify right side
   2,578,506x = 28,825,269,752,889
5. Step 5: Solve for x
   x = 28,825,269,752,889/2,578,506
6. Step 6: Final answer
   x = 11,179,058.63