Finding the Third Proportional to 158,520 and 338,424

Step by Step Solution

1. Step 1: Write the proportion equation
   158,520 : 338,424 = 338,424 : x
2. Step 2: Convert to fraction form
   158,520/338,424 = 338,424/x
3. Step 3: Cross multiply
   158,520x = 338,424 × 338,424
4. Step 4: Simplify right side
   158,520x = 114,530,803,776
5. Step 5: Solve for x
   x = 114,530,803,776/158,520
6. Step 6: Final answer
   x = 722,500.65