Finding the Third Proportional to 132,205.50 and 289,443

Step by Step Solution

1. Step 1: Write the proportion equation
   132,205.50 : 289,443 = 289,443 : x
2. Step 2: Convert to fraction form
   132,205.50/289,443 = 289,443/x
3. Step 3: Cross multiply
   132,205.50x = 289,443 × 289,443
4. Step 4: Simplify right side
   132,205.50x = 83,777,250,249
5. Step 5: Solve for x
   x = 83,777,250,249/132,205.50
6. Step 6: Final answer
   x = 633,689.60