Finding the Third Proportional to 23,420 and 55,284

Step by Step Solution

1. Step 1: Write the proportion equation
   23,420 : 55,284 = 55,284 : x
2. Step 2: Convert to fraction form
   23,420/55,284 = 55,284/x
3. Step 3: Cross multiply
   23,420x = 55,284 × 55,284
4. Step 4: Simplify right side
   23,420x = 3,056,320,656
5. Step 5: Solve for x
   x = 3,056,320,656/23,420
6. Step 6: Final answer
   x = 130,500.45