Finding the Third Proportional to 21,181.50 and 28,238.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,181.50 : 28,238.63 = 28,238.63 : x
2. Step 2: Convert to fraction form
   21,181.50/28,238.63 = 28,238.63/x
3. Step 3: Cross multiply
   21,181.50x = 28,238.63 × 28,238.63
4. Step 4: Simplify right side
   21,181.50x = 797,419,941.89
5. Step 5: Solve for x
   x = 797,419,941.89/21,181.50
6. Step 6: Final answer
   x = 37,647.00