Finding the Third Proportional to 12,090 and 25,630

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090 : 25,630 = 25,630 : x
2. Step 2: Convert to fraction form
   12,090/25,630 = 25,630/x
3. Step 3: Cross multiply
   12,090x = 25,630 × 25,630
4. Step 4: Simplify right side
   12,090x = 656,896,900
5. Step 5: Solve for x
   x = 656,896,900/12,090
6. Step 6: Final answer
   x = 54,333.90