Finding the Third Proportional to 1,422,864 and 2,186,778

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422,864 : 2,186,778 = 2,186,778 : x
2. Step 2: Convert to fraction form
   1,422,864/2,186,778 = 2,186,778/x
3. Step 3: Cross multiply
   1,422,864x = 2,186,778 × 2,186,778
4. Step 4: Simplify right side
   1,422,864x = 4,781,998,021,284
5. Step 5: Solve for x
   x = 4,781,998,021,284/1,422,864
6. Step 6: Final answer
   x = 3,360,825.79