Finding the Third Proportional to 819,722 and 1,680,268

Step by Step Solution

1. Step 1: Write the proportion equation
   819,722 : 1,680,268 = 1,680,268 : x
2. Step 2: Convert to fraction form
   819,722/1,680,268 = 1,680,268/x
3. Step 3: Cross multiply
   819,722x = 1,680,268 × 1,680,268
4. Step 4: Simplify right side
   819,722x = 2,823,300,551,824
5. Step 5: Solve for x
   x = 2,823,300,551,824/819,722
6. Step 6: Final answer
   x = 3,444,217.13