Finding the Third Proportional to 2,116,721 and 3,179,847

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,721 : 3,179,847 = 3,179,847 : x
2. Step 2: Convert to fraction form
   2,116,721/3,179,847 = 3,179,847/x
3. Step 3: Cross multiply
   2,116,721x = 3,179,847 × 3,179,847
4. Step 4: Simplify right side
   2,116,721x = 10,111,426,943,409
5. Step 5: Solve for x
   x = 10,111,426,943,409/2,116,721
6. Step 6: Final answer
   x = 4,776,929.48