Finding the Third Proportional to 2,190,890 and 4,707,724

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190,890 : 4,707,724 = 4,707,724 : x
2. Step 2: Convert to fraction form
   2,190,890/4,707,724 = 4,707,724/x
3. Step 3: Cross multiply
   2,190,890x = 4,707,724 × 4,707,724
4. Step 4: Simplify right side
   2,190,890x = 22,162,665,260,176
5. Step 5: Solve for x
   x = 22,162,665,260,176/2,190,890
6. Step 6: Final answer
   x = 10,115,827.48