Finding the Third Proportional to 2,663,478 and 5,869,854

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663,478 : 5,869,854 = 5,869,854 : x
2. Step 2: Convert to fraction form
   2,663,478/5,869,854 = 5,869,854/x
3. Step 3: Cross multiply
   2,663,478x = 5,869,854 × 5,869,854
4. Step 4: Simplify right side
   2,663,478x = 34,455,185,981,316
5. Step 5: Solve for x
   x = 34,455,185,981,316/2,663,478
6. Step 6: Final answer
   x = 12,936,163.16