Finding the Third Proportional to 921,770 and 1,917,116

Step by Step Solution

1. Step 1: Write the proportion equation
   921,770 : 1,917,116 = 1,917,116 : x
2. Step 2: Convert to fraction form
   921,770/1,917,116 = 1,917,116/x
3. Step 3: Cross multiply
   921,770x = 1,917,116 × 1,917,116
4. Step 4: Simplify right side
   921,770x = 3,675,333,757,456
5. Step 5: Solve for x
   x = 3,675,333,757,456/921,770
6. Step 6: Final answer
   x = 3,987,256.86