Finding the Third Proportional to 858,128 and 1,849,151

Step by Step Solution

1. Step 1: Write the proportion equation
   858,128 : 1,849,151 = 1,849,151 : x
2. Step 2: Convert to fraction form
   858,128/1,849,151 = 1,849,151/x
3. Step 3: Cross multiply
   858,128x = 1,849,151 × 1,849,151
4. Step 4: Simplify right side
   858,128x = 3,419,359,420,801
5. Step 5: Solve for x
   x = 3,419,359,420,801/858,128
6. Step 6: Final answer
   x = 3,984,672.94