Finding the Third Proportional to 14,340.50 and 21,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,340.50 : 21,040.50 = 21,040.50 : x
2. Step 2: Convert to fraction form
   14,340.50/21,040.50 = 21,040.50/x
3. Step 3: Cross multiply
   14,340.50x = 21,040.50 × 21,040.50
4. Step 4: Simplify right side
   14,340.50x = 442,702,640.25
5. Step 5: Solve for x
   x = 442,702,640.25/14,340.50
6. Step 6: Final answer
   x = 30,870.80