Finding the Third Proportional to 131,497.50 and 287,601

Step by Step Solution

1. Step 1: Write the proportion equation
   131,497.50 : 287,601 = 287,601 : x
2. Step 2: Convert to fraction form
   131,497.50/287,601 = 287,601/x
3. Step 3: Cross multiply
   131,497.50x = 287,601 × 287,601
4. Step 4: Simplify right side
   131,497.50x = 82,714,335,201
5. Step 5: Solve for x
   x = 82,714,335,201/131,497.50
6. Step 6: Final answer
   x = 629,018.31