Finding the Third Proportional to 1,071,890 and 2,231,988

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,890 : 2,231,988 = 2,231,988 : x
2. Step 2: Convert to fraction form
   1,071,890/2,231,988 = 2,231,988/x
3. Step 3: Cross multiply
   1,071,890x = 2,231,988 × 2,231,988
4. Step 4: Simplify right side
   1,071,890x = 4,981,770,432,144
5. Step 5: Solve for x
   x = 4,981,770,432,144/1,071,890
6. Step 6: Final answer
   x = 4,647,650.82