Finding the Third Proportional to 2,578,386 and 5,464,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,386 : 5,464,120.50 = 5,464,120.50 : x
2. Step 2: Convert to fraction form
   2,578,386/5,464,120.50 = 5,464,120.50/x
3. Step 3: Cross multiply
   2,578,386x = 5,464,120.50 × 5,464,120.50
4. Step 4: Simplify right side
   2,578,386x = 29,856,612,838,520.25
5. Step 5: Solve for x
   x = 29,856,612,838,520.25/2,578,386
6. Step 6: Final answer
   x = 11,579,574.52