Finding the Third Proportional to 181,870 and 399,836

Step by Step Solution

1. Step 1: Write the proportion equation
   181,870 : 399,836 = 399,836 : x
2. Step 2: Convert to fraction form
   181,870/399,836 = 399,836/x
3. Step 3: Cross multiply
   181,870x = 399,836 × 399,836
4. Step 4: Simplify right side
   181,870x = 159,868,826,896
5. Step 5: Solve for x
   x = 159,868,826,896/181,870
6. Step 6: Final answer
   x = 879,028.02