Finding the Third Proportional to 921,768 and 1,917,112

Step by Step Solution

1. Step 1: Write the proportion equation
   921,768 : 1,917,112 = 1,917,112 : x
2. Step 2: Convert to fraction form
   921,768/1,917,112 = 1,917,112/x
3. Step 3: Cross multiply
   921,768x = 1,917,112 × 1,917,112
4. Step 4: Simplify right side
   921,768x = 3,675,318,420,544
5. Step 5: Solve for x
   x = 3,675,318,420,544/921,768
6. Step 6: Final answer
   x = 3,987,248.87