Finding the Third Proportional to 142,279.50 and 329,394

Step by Step Solution

1. Step 1: Write the proportion equation
   142,279.50 : 329,394 = 329,394 : x
2. Step 2: Convert to fraction form
   142,279.50/329,394 = 329,394/x
3. Step 3: Cross multiply
   142,279.50x = 329,394 × 329,394
4. Step 4: Simplify right side
   142,279.50x = 108,500,407,236
5. Step 5: Solve for x
   x = 108,500,407,236/142,279.50
6. Step 6: Final answer
   x = 762,586.37