Finding the Third Proportional to 2,218,370 and 4,772,990

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,370 : 4,772,990 = 4,772,990 : x
2. Step 2: Convert to fraction form
   2,218,370/4,772,990 = 4,772,990/x
3. Step 3: Cross multiply
   2,218,370x = 4,772,990 × 4,772,990
4. Step 4: Simplify right side
   2,218,370x = 22,781,433,540,100
5. Step 5: Solve for x
   x = 22,781,433,540,100/2,218,370
6. Step 6: Final answer
   x = 10,269,447.18