Finding the Third Proportional to 131,433 and 287,190

Step by Step Solution

1. Step 1: Write the proportion equation
   131,433 : 287,190 = 287,190 : x
2. Step 2: Convert to fraction form
   131,433/287,190 = 287,190/x
3. Step 3: Cross multiply
   131,433x = 287,190 × 287,190
4. Step 4: Simplify right side
   131,433x = 82,478,096,100
5. Step 5: Solve for x
   x = 82,478,096,100/131,433
6. Step 6: Final answer
   x = 627,529.59