Finding the Third Proportional to 140,912 and 307,960

Step by Step Solution

1. Step 1: Write the proportion equation
   140,912 : 307,960 = 307,960 : x
2. Step 2: Convert to fraction form
   140,912/307,960 = 307,960/x
3. Step 3: Cross multiply
   140,912x = 307,960 × 307,960
4. Step 4: Simplify right side
   140,912x = 94,839,361,600
5. Step 5: Solve for x
   x = 94,839,361,600/140,912
6. Step 6: Final answer
   x = 673,039.64