Finding the Third Proportional to 158,213 and 231,366

Step by Step Solution

1. Step 1: Write the proportion equation
   158,213 : 231,366 = 231,366 : x
2. Step 2: Convert to fraction form
   158,213/231,366 = 231,366/x
3. Step 3: Cross multiply
   158,213x = 231,366 × 231,366
4. Step 4: Simplify right side
   158,213x = 53,530,225,956
5. Step 5: Solve for x
   x = 53,530,225,956/158,213
6. Step 6: Final answer
   x = 338,342.78