Finding the Third Proportional to 1,331,721 and 2,086,830

Step by Step Solution

1. Step 1: Write the proportion equation
   1,331,721 : 2,086,830 = 2,086,830 : x
2. Step 2: Convert to fraction form
   1,331,721/2,086,830 = 2,086,830/x
3. Step 3: Cross multiply
   1,331,721x = 2,086,830 × 2,086,830
4. Step 4: Simplify right side
   1,331,721x = 4,354,859,448,900
5. Step 5: Solve for x
   x = 4,354,859,448,900/1,331,721
6. Step 6: Final answer
   x = 3,270,098.95