Finding the Third Proportional to 1,281,992 and 1,992,912

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281,992 : 1,992,912 = 1,992,912 : x
2. Step 2: Convert to fraction form
   1,281,992/1,992,912 = 1,992,912/x
3. Step 3: Cross multiply
   1,281,992x = 1,992,912 × 1,992,912
4. Step 4: Simplify right side
   1,281,992x = 3,971,698,239,744
5. Step 5: Solve for x
   x = 3,971,698,239,744/1,281,992
6. Step 6: Final answer
   x = 3,098,067.88