Finding the Third Proportional to 392,674 and 854,870

Step by Step Solution

1. Step 1: Write the proportion equation
   392,674 : 854,870 = 854,870 : x
2. Step 2: Convert to fraction form
   392,674/854,870 = 854,870/x
3. Step 3: Cross multiply
   392,674x = 854,870 × 854,870
4. Step 4: Simplify right side
   392,674x = 730,802,716,900
5. Step 5: Solve for x
   x = 730,802,716,900/392,674
6. Step 6: Final answer
   x = 1,861,092.71