Finding the Third Proportional to 12,127.50 and 18,722.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,127.50 : 18,722.25 = 18,722.25 : x
2. Step 2: Convert to fraction form
   12,127.50/18,722.25 = 18,722.25/x
3. Step 3: Cross multiply
   12,127.50x = 18,722.25 × 18,722.25
4. Step 4: Simplify right side
   12,127.50x = 350,522,645.06
5. Step 5: Solve for x
   x = 350,522,645.06/12,127.50
6. Step 6: Final answer
   x = 28,903.12