Finding the Third Proportional to 60,405 and 142,134

Step by Step Solution

1. Step 1: Write the proportion equation
   60,405 : 142,134 = 142,134 : x
2. Step 2: Convert to fraction form
   60,405/142,134 = 142,134/x
3. Step 3: Cross multiply
   60,405x = 142,134 × 142,134
4. Step 4: Simplify right side
   60,405x = 20,202,073,956
5. Step 5: Solve for x
   x = 20,202,073,956/60,405
6. Step 6: Final answer
   x = 334,443.74