Finding the Third Proportional to 132,797 and 287,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,797 : 287,720.50 = 287,720.50 : x
2. Step 2: Convert to fraction form
   132,797/287,720.50 = 287,720.50/x
3. Step 3: Cross multiply
   132,797x = 287,720.50 × 287,720.50
4. Step 4: Simplify right side
   132,797x = 82,783,086,120.25
5. Step 5: Solve for x
   x = 82,783,086,120.25/132,797
6. Step 6: Final answer
   x = 623,380.69