Finding the Third Proportional to 855,180 and 1,859,209

Step by Step Solution

1. Step 1: Write the proportion equation
   855,180 : 1,859,209 = 1,859,209 : x
2. Step 2: Convert to fraction form
   855,180/1,859,209 = 1,859,209/x
3. Step 3: Cross multiply
   855,180x = 1,859,209 × 1,859,209
4. Step 4: Simplify right side
   855,180x = 3,456,658,105,681
5. Step 5: Solve for x
   x = 3,456,658,105,681/855,180
6. Step 6: Final answer
   x = 4,042,024.02