Finding the Third Proportional to 65,940 and 142,440

Step by Step Solution

1. Step 1: Write the proportion equation
   65,940 : 142,440 = 142,440 : x
2. Step 2: Convert to fraction form
   65,940/142,440 = 142,440/x
3. Step 3: Cross multiply
   65,940x = 142,440 × 142,440
4. Step 4: Simplify right side
   65,940x = 20,289,153,600
5. Step 5: Solve for x
   x = 20,289,153,600/65,940
6. Step 6: Final answer
   x = 307,691.14