Finding the Third Proportional to 142,140 and 306,150

Step by Step Solution

1. Step 1: Write the proportion equation
   142,140 : 306,150 = 306,150 : x
2. Step 2: Convert to fraction form
   142,140/306,150 = 306,150/x
3. Step 3: Cross multiply
   142,140x = 306,150 × 306,150
4. Step 4: Simplify right side
   142,140x = 93,727,822,500
5. Step 5: Solve for x
   x = 93,727,822,500/142,140
6. Step 6: Final answer
   x = 659,404.97