Finding the Third Proportional to 142,938 and 323,240

Step by Step Solution

1. Step 1: Write the proportion equation
   142,938 : 323,240 = 323,240 : x
2. Step 2: Convert to fraction form
   142,938/323,240 = 323,240/x
3. Step 3: Cross multiply
   142,938x = 323,240 × 323,240
4. Step 4: Simplify right side
   142,938x = 104,484,097,600
5. Step 5: Solve for x
   x = 104,484,097,600/142,938
6. Step 6: Final answer
   x = 730,974.95