Finding the Third Proportional to 142,969 and 305,570

Step by Step Solution

1. Step 1: Write the proportion equation
   142,969 : 305,570 = 305,570 : x
2. Step 2: Convert to fraction form
   142,969/305,570 = 305,570/x
3. Step 3: Cross multiply
   142,969x = 305,570 × 305,570
4. Step 4: Simplify right side
   142,969x = 93,373,024,900
5. Step 5: Solve for x
   x = 93,373,024,900/142,969
6. Step 6: Final answer
   x = 653,099.80