Finding the Third Proportional to 131,466 and 287,808.75

Step by Step Solution

1. Step 1: Write the proportion equation
   131,466 : 287,808.75 = 287,808.75 : x
2. Step 2: Convert to fraction form
   131,466/287,808.75 = 287,808.75/x
3. Step 3: Cross multiply
   131,466x = 287,808.75 × 287,808.75
4. Step 4: Simplify right side
   131,466x = 82,833,876,576.56
5. Step 5: Solve for x
   x = 82,833,876,576.56/131,466
6. Step 6: Final answer
   x = 630,078.32