Finding the Third Proportional to 17,772 and 39,000

Step by Step Solution

1. Step 1: Write the proportion equation
   17,772 : 39,000 = 39,000 : x
2. Step 2: Convert to fraction form
   17,772/39,000 = 39,000/x
3. Step 3: Cross multiply
   17,772x = 39,000 × 39,000
4. Step 4: Simplify right side
   17,772x = 1,521,000,000
5. Step 5: Solve for x
   x = 1,521,000,000/17,772
6. Step 6: Final answer
   x = 85,584.06