Finding the Third Proportional to 142,740 and 307,404

Step by Step Solution

1. Step 1: Write the proportion equation
   142,740 : 307,404 = 307,404 : x
2. Step 2: Convert to fraction form
   142,740/307,404 = 307,404/x
3. Step 3: Cross multiply
   142,740x = 307,404 × 307,404
4. Step 4: Simplify right side
   142,740x = 94,497,219,216
5. Step 5: Solve for x
   x = 94,497,219,216/142,740
6. Step 6: Final answer
   x = 662,023.39