Finding the Third Proportional to 105,090 and 124,530

Step by Step Solution

1. Step 1: Write the proportion equation
   105,090 : 124,530 = 124,530 : x
2. Step 2: Convert to fraction form
   105,090/124,530 = 124,530/x
3. Step 3: Cross multiply
   105,090x = 124,530 × 124,530
4. Step 4: Simplify right side
   105,090x = 15,507,720,900
5. Step 5: Solve for x
   x = 15,507,720,900/105,090
6. Step 6: Final answer
   x = 147,566.09