Finding the Third Proportional to 12,120 and 22,980

Step by Step Solution

1. Step 1: Write the proportion equation
   12,120 : 22,980 = 22,980 : x
2. Step 2: Convert to fraction form
   12,120/22,980 = 22,980/x
3. Step 3: Cross multiply
   12,120x = 22,980 × 22,980
4. Step 4: Simplify right side
   12,120x = 528,080,400
5. Step 5: Solve for x
   x = 528,080,400/12,120
6. Step 6: Final answer
   x = 43,570.99