Finding the Third Proportional to 228,200 and 508,870

Step by Step Solution

1. Step 1: Write the proportion equation
   228,200 : 508,870 = 508,870 : x
2. Step 2: Convert to fraction form
   228,200/508,870 = 508,870/x
3. Step 3: Cross multiply
   228,200x = 508,870 × 508,870
4. Step 4: Simplify right side
   228,200x = 258,948,676,900
5. Step 5: Solve for x
   x = 258,948,676,900/228,200
6. Step 6: Final answer
   x = 1,134,744.42