Finding the Third Proportional to 11,403 and 17,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,403 : 17,518.50 = 17,518.50 : x
2. Step 2: Convert to fraction form
   11,403/17,518.50 = 17,518.50/x
3. Step 3: Cross multiply
   11,403x = 17,518.50 × 17,518.50
4. Step 4: Simplify right side
   11,403x = 306,897,842.25
5. Step 5: Solve for x
   x = 306,897,842.25/11,403
6. Step 6: Final answer
   x = 26,913.78