Finding the Third Proportional to 911,721 and 1,983,984

Step by Step Solution

1. Step 1: Write the proportion equation
   911,721 : 1,983,984 = 1,983,984 : x
2. Step 2: Convert to fraction form
   911,721/1,983,984 = 1,983,984/x
3. Step 3: Cross multiply
   911,721x = 1,983,984 × 1,983,984
4. Step 4: Simplify right side
   911,721x = 3,936,192,512,256
5. Step 5: Solve for x
   x = 3,936,192,512,256/911,721
6. Step 6: Final answer
   x = 4,317,321.32