Finding the Third Proportional to 131,192 and 287,008

Step by Step Solution

1. Step 1: Write the proportion equation
   131,192 : 287,008 = 287,008 : x
2. Step 2: Convert to fraction form
   131,192/287,008 = 287,008/x
3. Step 3: Cross multiply
   131,192x = 287,008 × 287,008
4. Step 4: Simplify right side
   131,192x = 82,373,592,064
5. Step 5: Solve for x
   x = 82,373,592,064/131,192
6. Step 6: Final answer
   x = 627,885.79