Finding the Third Proportional to 142,651.50 and 220,770

Step by Step Solution

1. Step 1: Write the proportion equation
   142,651.50 : 220,770 = 220,770 : x
2. Step 2: Convert to fraction form
   142,651.50/220,770 = 220,770/x
3. Step 3: Cross multiply
   142,651.50x = 220,770 × 220,770
4. Step 4: Simplify right side
   142,651.50x = 48,739,392,900
5. Step 5: Solve for x
   x = 48,739,392,900/142,651.50
6. Step 6: Final answer
   x = 341,667.58