Finding the Third Proportional to 132,436 and 289,630

Step by Step Solution

1. Step 1: Write the proportion equation
   132,436 : 289,630 = 289,630 : x
2. Step 2: Convert to fraction form
   132,436/289,630 = 289,630/x
3. Step 3: Cross multiply
   132,436x = 289,630 × 289,630
4. Step 4: Simplify right side
   132,436x = 83,885,536,900
5. Step 5: Solve for x
   x = 83,885,536,900/132,436
6. Step 6: Final answer
   x = 633,404.34