Finding the Third Proportional to 8,958.50 and 19,510

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.50 : 19,510 = 19,510 : x
2. Step 2: Convert to fraction form
   8,958.50/19,510 = 19,510/x
3. Step 3: Cross multiply
   8,958.50x = 19,510 × 19,510
4. Step 4: Simplify right side
   8,958.50x = 380,640,100
5. Step 5: Solve for x
   x = 380,640,100/8,958.50
6. Step 6: Final answer
   x = 42,489.27