Finding the Third Proportional to 23,415 and 55,272

Step by Step Solution

1. Step 1: Write the proportion equation
   23,415 : 55,272 = 55,272 : x
2. Step 2: Convert to fraction form
   23,415/55,272 = 55,272/x
3. Step 3: Cross multiply
   23,415x = 55,272 × 55,272
4. Step 4: Simplify right side
   23,415x = 3,054,993,984
5. Step 5: Solve for x
   x = 3,054,993,984/23,415
6. Step 6: Final answer
   x = 130,471.66