Finding the Third Proportional to 2,220,605 and 4,778,008

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220,605 : 4,778,008 = 4,778,008 : x
2. Step 2: Convert to fraction form
   2,220,605/4,778,008 = 4,778,008/x
3. Step 3: Cross multiply
   2,220,605x = 4,778,008 × 4,778,008
4. Step 4: Simplify right side
   2,220,605x = 22,829,360,448,064
5. Step 5: Solve for x
   x = 22,829,360,448,064/2,220,605
6. Step 6: Final answer
   x = 10,280,693.98