Finding the Third Proportional to 11,212.17 and 16,121.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,212.17 : 16,121.53 = 16,121.53 : x
2. Step 2: Convert to fraction form
   11,212.17/16,121.53 = 16,121.53/x
3. Step 3: Cross multiply
   11,212.17x = 16,121.53 × 16,121.53
4. Step 4: Simplify right side
   11,212.17x = 259,903,769.84
5. Step 5: Solve for x
   x = 259,903,769.84/11,212.17
6. Step 6: Final answer
   x = 23,180.50