Finding the Third Proportional to 123,031.50 and 268,299

Step by Step Solution

1. Step 1: Write the proportion equation
   123,031.50 : 268,299 = 268,299 : x
2. Step 2: Convert to fraction form
   123,031.50/268,299 = 268,299/x
3. Step 3: Cross multiply
   123,031.50x = 268,299 × 268,299
4. Step 4: Simplify right side
   123,031.50x = 71,984,353,401
5. Step 5: Solve for x
   x = 71,984,353,401/123,031.50
6. Step 6: Final answer
   x = 585,088.81