Finding the Third Proportional to 17,722 and 38,900

Step by Step Solution

1. Step 1: Write the proportion equation
   17,722 : 38,900 = 38,900 : x
2. Step 2: Convert to fraction form
   17,722/38,900 = 38,900/x
3. Step 3: Cross multiply
   17,722x = 38,900 × 38,900
4. Step 4: Simplify right side
   17,722x = 1,513,210,000
5. Step 5: Solve for x
   x = 1,513,210,000/17,722
6. Step 6: Final answer
   x = 85,385.96