Finding the Third Proportional to 131,435 and 287,194

Step by Step Solution

1. Step 1: Write the proportion equation
   131,435 : 287,194 = 287,194 : x
2. Step 2: Convert to fraction form
   131,435/287,194 = 287,194/x
3. Step 3: Cross multiply
   131,435x = 287,194 × 287,194
4. Step 4: Simplify right side
   131,435x = 82,480,393,636
5. Step 5: Solve for x
   x = 82,480,393,636/131,435
6. Step 6: Final answer
   x = 627,537.52