Finding the Third Proportional to 2,190,891 and 4,707,726

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190,891 : 4,707,726 = 4,707,726 : x
2. Step 2: Convert to fraction form
   2,190,891/4,707,726 = 4,707,726/x
3. Step 3: Cross multiply
   2,190,891x = 4,707,726 × 4,707,726
4. Step 4: Simplify right side
   2,190,891x = 22,162,684,091,076
5. Step 5: Solve for x
   x = 22,162,684,091,076/2,190,891
6. Step 6: Final answer
   x = 10,115,831.45