Finding the Third Proportional to 17,940 and 35,420

Step by Step Solution

1. Step 1: Write the proportion equation
   17,940 : 35,420 = 35,420 : x
2. Step 2: Convert to fraction form
   17,940/35,420 = 35,420/x
3. Step 3: Cross multiply
   17,940x = 35,420 × 35,420
4. Step 4: Simplify right side
   17,940x = 1,254,576,400
5. Step 5: Solve for x
   x = 1,254,576,400/17,940
6. Step 6: Final answer
   x = 69,931.79