Finding the Third Proportional to 17,390 and 26,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,390 : 26,165.50 = 26,165.50 : x
2. Step 2: Convert to fraction form
   17,390/26,165.50 = 26,165.50/x
3. Step 3: Cross multiply
   17,390x = 26,165.50 × 26,165.50
4. Step 4: Simplify right side
   17,390x = 684,633,390.25
5. Step 5: Solve for x
   x = 684,633,390.25/17,390
6. Step 6: Final answer
   x = 39,369.37