Finding the Third Proportional to 980.50 and 1,724

Step by Step Solution

1. Step 1: Write the proportion equation
   980.50 : 1,724 = 1,724 : x
2. Step 2: Convert to fraction form
   980.50/1,724 = 1,724/x
3. Step 3: Cross multiply
   980.50x = 1,724 × 1,724
4. Step 4: Simplify right side
   980.50x = 2,972,176
5. Step 5: Solve for x
   x = 2,972,176/980.50
6. Step 6: Final answer
   x = 3,031.29