Finding the Third Proportional to 1,317,823 and 1,990,775

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317,823 : 1,990,775 = 1,990,775 : x
2. Step 2: Convert to fraction form
   1,317,823/1,990,775 = 1,990,775/x
3. Step 3: Cross multiply
   1,317,823x = 1,990,775 × 1,990,775
4. Step 4: Simplify right side
   1,317,823x = 3,963,185,100,625
5. Step 5: Solve for x
   x = 3,963,185,100,625/1,317,823
6. Step 6: Final answer
   x = 3,007,372.84