Finding the Third Proportional to 131,184 and 287,586

Step by Step Solution

1. Step 1: Write the proportion equation
   131,184 : 287,586 = 287,586 : x
2. Step 2: Convert to fraction form
   131,184/287,586 = 287,586/x
3. Step 3: Cross multiply
   131,184x = 287,586 × 287,586
4. Step 4: Simplify right side
   131,184x = 82,705,707,396
5. Step 5: Solve for x
   x = 82,705,707,396/131,184
6. Step 6: Final answer
   x = 630,455.75