Finding the Third Proportional to 10,040 and 13,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,040 : 13,417.50 = 13,417.50 : x
2. Step 2: Convert to fraction form
   10,040/13,417.50 = 13,417.50/x
3. Step 3: Cross multiply
   10,040x = 13,417.50 × 13,417.50
4. Step 4: Simplify right side
   10,040x = 180,029,306.25
5. Step 5: Solve for x
   x = 180,029,306.25/10,040
6. Step 6: Final answer
   x = 17,931.21