Finding the Third Proportional to 1,907,721 and 4,042,890

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907,721 : 4,042,890 = 4,042,890 : x
2. Step 2: Convert to fraction form
   1,907,721/4,042,890 = 4,042,890/x
3. Step 3: Cross multiply
   1,907,721x = 4,042,890 × 4,042,890
4. Step 4: Simplify right side
   1,907,721x = 16,344,959,552,100
5. Step 5: Solve for x
   x = 16,344,959,552,100/1,907,721
6. Step 6: Final answer
   x = 8,567,793.48