Finding the Third Proportional to 391,552 and 854,144

Step by Step Solution

1. Step 1: Write the proportion equation
   391,552 : 854,144 = 854,144 : x
2. Step 2: Convert to fraction form
   391,552/854,144 = 854,144/x
3. Step 3: Cross multiply
   391,552x = 854,144 × 854,144
4. Step 4: Simplify right side
   391,552x = 729,561,972,736
5. Step 5: Solve for x
   x = 729,561,972,736/391,552
6. Step 6: Final answer
   x = 1,863,256.92