Finding the Third Proportional to 131,816 and 204,280

Step by Step Solution

1. Step 1: Write the proportion equation
   131,816 : 204,280 = 204,280 : x
2. Step 2: Convert to fraction form
   131,816/204,280 = 204,280/x
3. Step 3: Cross multiply
   131,816x = 204,280 × 204,280
4. Step 4: Simplify right side
   131,816x = 41,730,318,400
5. Step 5: Solve for x
   x = 41,730,318,400/131,816
6. Step 6: Final answer
   x = 316,580.07