Finding the Third Proportional to 2,220,898 and 4,778,684

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220,898 : 4,778,684 = 4,778,684 : x
2. Step 2: Convert to fraction form
   2,220,898/4,778,684 = 4,778,684/x
3. Step 3: Cross multiply
   2,220,898x = 4,778,684 × 4,778,684
4. Step 4: Simplify right side
   2,220,898x = 22,835,820,771,856
5. Step 5: Solve for x
   x = 22,835,820,771,856/2,220,898
6. Step 6: Final answer
   x = 10,282,246.54