Finding the Third Proportional to 10,212.12 and 21,359.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,212.12 : 21,359.53 = 21,359.53 : x
2. Step 2: Convert to fraction form
   10,212.12/21,359.53 = 21,359.53/x
3. Step 3: Cross multiply
   10,212.12x = 21,359.53 × 21,359.53
4. Step 4: Simplify right side
   10,212.12x = 456,229,575.22
5. Step 5: Solve for x
   x = 456,229,575.22/10,212.12
6. Step 6: Final answer
   x = 44,675.32