Finding the Third Proportional to 203,823 and 336,870

Step by Step Solution

1. Step 1: Write the proportion equation
   203,823 : 336,870 = 336,870 : x
2. Step 2: Convert to fraction form
   203,823/336,870 = 336,870/x
3. Step 3: Cross multiply
   203,823x = 336,870 × 336,870
4. Step 4: Simplify right side
   203,823x = 113,481,396,900
5. Step 5: Solve for x
   x = 113,481,396,900/203,823
6. Step 6: Final answer
   x = 556,764.43