Finding the Third Proportional to 131,418 and 287,714

Step by Step Solution

1. Step 1: Write the proportion equation
   131,418 : 287,714 = 287,714 : x
2. Step 2: Convert to fraction form
   131,418/287,714 = 287,714/x
3. Step 3: Cross multiply
   131,418x = 287,714 × 287,714
4. Step 4: Simplify right side
   131,418x = 82,779,345,796
5. Step 5: Solve for x
   x = 82,779,345,796/131,418
6. Step 6: Final answer
   x = 629,893.51