Finding the Third Proportional to 131,980 and 212,496

Step by Step Solution

1. Step 1: Write the proportion equation
   131,980 : 212,496 = 212,496 : x
2. Step 2: Convert to fraction form
   131,980/212,496 = 212,496/x
3. Step 3: Cross multiply
   131,980x = 212,496 × 212,496
4. Step 4: Simplify right side
   131,980x = 45,154,550,016
5. Step 5: Solve for x
   x = 45,154,550,016/131,980
6. Step 6: Final answer
   x = 342,131.76