Finding the Third Proportional to 132,443 and 287,461

Step by Step Solution

1. Step 1: Write the proportion equation
   132,443 : 287,461 = 287,461 : x
2. Step 2: Convert to fraction form
   132,443/287,461 = 287,461/x
3. Step 3: Cross multiply
   132,443x = 287,461 × 287,461
4. Step 4: Simplify right side
   132,443x = 82,633,826,521
5. Step 5: Solve for x
   x = 82,633,826,521/132,443
6. Step 6: Final answer
   x = 623,919.92