Finding the Third Proportional to 143,612 and 306,771.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,612 : 306,771.50 = 306,771.50 : x
2. Step 2: Convert to fraction form
   143,612/306,771.50 = 306,771.50/x
3. Step 3: Cross multiply
   143,612x = 306,771.50 × 306,771.50
4. Step 4: Simplify right side
   143,612x = 94,108,753,212.25
5. Step 5: Solve for x
   x = 94,108,753,212.25/143,612
6. Step 6: Final answer
   x = 655,298.67