Finding the Third Proportional to 131,512 and 287,892

Step by Step Solution

1. Step 1: Write the proportion equation
   131,512 : 287,892 = 287,892 : x
2. Step 2: Convert to fraction form
   131,512/287,892 = 287,892/x
3. Step 3: Cross multiply
   131,512x = 287,892 × 287,892
4. Step 4: Simplify right side
   131,512x = 82,881,803,664
5. Step 5: Solve for x
   x = 82,881,803,664/131,512
6. Step 6: Final answer
   x = 630,222.36