Finding the Third Proportional to 40,515 and 87,510

Step by Step Solution

1. Step 1: Write the proportion equation
   40,515 : 87,510 = 87,510 : x
2. Step 2: Convert to fraction form
   40,515/87,510 = 87,510/x
3. Step 3: Cross multiply
   40,515x = 87,510 × 87,510
4. Step 4: Simplify right side
   40,515x = 7,658,000,100
5. Step 5: Solve for x
   x = 7,658,000,100/40,515
6. Step 6: Final answer
   x = 189,016.42