Finding the Third Proportional to 15,959.50 and 21,468.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,959.50 : 21,468.50 = 21,468.50 : x
2. Step 2: Convert to fraction form
   15,959.50/21,468.50 = 21,468.50/x
3. Step 3: Cross multiply
   15,959.50x = 21,468.50 × 21,468.50
4. Step 4: Simplify right side
   15,959.50x = 460,896,492.25
5. Step 5: Solve for x
   x = 460,896,492.25/15,959.50
6. Step 6: Final answer
   x = 28,879.13