Finding the Third Proportional to 819,988 and 1,801,412

Step by Step Solution

1. Step 1: Write the proportion equation
   819,988 : 1,801,412 = 1,801,412 : x
2. Step 2: Convert to fraction form
   819,988/1,801,412 = 1,801,412/x
3. Step 3: Cross multiply
   819,988x = 1,801,412 × 1,801,412
4. Step 4: Simplify right side
   819,988x = 3,245,085,193,744
5. Step 5: Solve for x
   x = 3,245,085,193,744/819,988
6. Step 6: Final answer
   x = 3,957,478.88