Finding the Third Proportional to 142,861.50 and 307,533.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,861.50 : 307,533.50 = 307,533.50 : x
2. Step 2: Convert to fraction form
   142,861.50/307,533.50 = 307,533.50/x
3. Step 3: Cross multiply
   142,861.50x = 307,533.50 × 307,533.50
4. Step 4: Simplify right side
   142,861.50x = 94,576,853,622.25
5. Step 5: Solve for x
   x = 94,576,853,622.25/142,861.50
6. Step 6: Final answer
   x = 662,017.78