Finding the Third Proportional to 142,912 and 307,667

Step by Step Solution

1. Step 1: Write the proportion equation
   142,912 : 307,667 = 307,667 : x
2. Step 2: Convert to fraction form
   142,912/307,667 = 307,667/x
3. Step 3: Cross multiply
   142,912x = 307,667 × 307,667
4. Step 4: Simplify right side
   142,912x = 94,658,982,889
5. Step 5: Solve for x
   x = 94,658,982,889/142,912
6. Step 6: Final answer
   x = 662,358.53