Finding the Third Proportional to 12,135 and 18,127.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,135 : 18,127.50 = 18,127.50 : x
2. Step 2: Convert to fraction form
   12,135/18,127.50 = 18,127.50/x
3. Step 3: Cross multiply
   12,135x = 18,127.50 × 18,127.50
4. Step 4: Simplify right side
   12,135x = 328,606,256.25
5. Step 5: Solve for x
   x = 328,606,256.25/12,135
6. Step 6: Final answer
   x = 27,079.21