Finding the Third Proportional to 921,766.50 and 1,917,108

Step by Step Solution

1. Step 1: Write the proportion equation
   921,766.50 : 1,917,108 = 1,917,108 : x
2. Step 2: Convert to fraction form
   921,766.50/1,917,108 = 1,917,108/x
3. Step 3: Cross multiply
   921,766.50x = 1,917,108 × 1,917,108
4. Step 4: Simplify right side
   921,766.50x = 3,675,303,083,664
5. Step 5: Solve for x
   x = 3,675,303,083,664/921,766.50
6. Step 6: Final answer
   x = 3,987,238.72