Finding the Third Proportional to 2,220,644 and 4,778,088

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220,644 : 4,778,088 = 4,778,088 : x
2. Step 2: Convert to fraction form
   2,220,644/4,778,088 = 4,778,088/x
3. Step 3: Cross multiply
   2,220,644x = 4,778,088 × 4,778,088
4. Step 4: Simplify right side
   2,220,644x = 22,830,124,935,744
5. Step 5: Solve for x
   x = 22,830,124,935,744/2,220,644
6. Step 6: Final answer
   x = 10,280,857.69