Finding the Third Proportional to 10,198.13 and 21,621.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,198.13 : 21,621.38 = 21,621.38 : x
2. Step 2: Convert to fraction form
   10,198.13/21,621.38 = 21,621.38/x
3. Step 3: Cross multiply
   10,198.13x = 21,621.38 × 21,621.38
4. Step 4: Simplify right side
   10,198.13x = 467,483,856.89
5. Step 5: Solve for x
   x = 467,483,856.89/10,198.13
6. Step 6: Final answer
   x = 45,840.18