Finding the Third Proportional to 21,180.50 and 28,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,180.50 : 28,236.50 = 28,236.50 : x
2. Step 2: Convert to fraction form
   21,180.50/28,236.50 = 28,236.50/x
3. Step 3: Cross multiply
   21,180.50x = 28,236.50 × 28,236.50
4. Step 4: Simplify right side
   21,180.50x = 797,299,932.25
5. Step 5: Solve for x
   x = 797,299,932.25/21,180.50
6. Step 6: Final answer
   x = 37,643.11