Finding the Third Proportional to 142,546.50 and 306,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,546.50 : 306,151.50 = 306,151.50 : x
2. Step 2: Convert to fraction form
   142,546.50/306,151.50 = 306,151.50/x
3. Step 3: Cross multiply
   142,546.50x = 306,151.50 × 306,151.50
4. Step 4: Simplify right side
   142,546.50x = 93,728,740,952.25
5. Step 5: Solve for x
   x = 93,728,740,952.25/142,546.50
6. Step 6: Final answer
   x = 657,530.99