Finding the Third Proportional to 858,123 and 1,851,192

Step by Step Solution

1. Step 1: Write the proportion equation
   858,123 : 1,851,192 = 1,851,192 : x
2. Step 2: Convert to fraction form
   858,123/1,851,192 = 1,851,192/x
3. Step 3: Cross multiply
   858,123x = 1,851,192 × 1,851,192
4. Step 4: Simplify right side
   858,123x = 3,426,911,820,864
5. Step 5: Solve for x
   x = 3,426,911,820,864/858,123
6. Step 6: Final answer
   x = 3,993,497.23