Finding the Third Proportional to 142,279 and 206,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,279 : 206,074.50 = 206,074.50 : x
2. Step 2: Convert to fraction form
   142,279/206,074.50 = 206,074.50/x
3. Step 3: Cross multiply
   142,279x = 206,074.50 × 206,074.50
4. Step 4: Simplify right side
   142,279x = 42,466,699,550.25
5. Step 5: Solve for x
   x = 42,466,699,550.25/142,279
6. Step 6: Final answer
   x = 298,474.82