Finding the Third Proportional to 921,774 and 1,917,124

Step by Step Solution

1. Step 1: Write the proportion equation
   921,774 : 1,917,124 = 1,917,124 : x
2. Step 2: Convert to fraction form
   921,774/1,917,124 = 1,917,124/x
3. Step 3: Cross multiply
   921,774x = 1,917,124 × 1,917,124
4. Step 4: Simplify right side
   921,774x = 3,675,364,431,376
5. Step 5: Solve for x
   x = 3,675,364,431,376/921,774
6. Step 6: Final answer
   x = 3,987,272.84