Finding the Third Proportional to 60,200 and 142,120

Step by Step Solution

1. Step 1: Write the proportion equation
   60,200 : 142,120 = 142,120 : x
2. Step 2: Convert to fraction form
   60,200/142,120 = 142,120/x
3. Step 3: Cross multiply
   60,200x = 142,120 × 142,120
4. Step 4: Simplify right side
   60,200x = 20,198,094,400
5. Step 5: Solve for x
   x = 20,198,094,400/60,200
6. Step 6: Final answer
   x = 335,516.52