Finding the Third Proportional to 17,940 and 39,060

Step by Step Solution

1. Step 1: Write the proportion equation
   17,940 : 39,060 = 39,060 : x
2. Step 2: Convert to fraction form
   17,940/39,060 = 39,060/x
3. Step 3: Cross multiply
   17,940x = 39,060 × 39,060
4. Step 4: Simplify right side
   17,940x = 1,525,683,600
5. Step 5: Solve for x
   x = 1,525,683,600/17,940
6. Step 6: Final answer
   x = 85,043.68