Finding the Third Proportional to 857,188 and 1,866,760

Step by Step Solution

1. Step 1: Write the proportion equation
   857,188 : 1,866,760 = 1,866,760 : x
2. Step 2: Convert to fraction form
   857,188/1,866,760 = 1,866,760/x
3. Step 3: Cross multiply
   857,188x = 1,866,760 × 1,866,760
4. Step 4: Simplify right side
   857,188x = 3,484,792,897,600
5. Step 5: Solve for x
   x = 3,484,792,897,600/857,188
6. Step 6: Final answer
   x = 4,065,377.60