Finding the Third Proportional to 21,168 and 28,100.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,168 : 28,100.25 = 28,100.25 : x
2. Step 2: Convert to fraction form
   21,168/28,100.25 = 28,100.25/x
3. Step 3: Cross multiply
   21,168x = 28,100.25 × 28,100.25
4. Step 4: Simplify right side
   21,168x = 789,624,050.06
5. Step 5: Solve for x
   x = 789,624,050.06/21,168
6. Step 6: Final answer
   x = 37,302.72