Finding the Third Proportional to 105,240 and 157,980

Step by Step Solution

1. Step 1: Write the proportion equation
   105,240 : 157,980 = 157,980 : x
2. Step 2: Convert to fraction form
   105,240/157,980 = 157,980/x
3. Step 3: Cross multiply
   105,240x = 157,980 × 157,980
4. Step 4: Simplify right side
   105,240x = 24,957,680,400
5. Step 5: Solve for x
   x = 24,957,680,400/105,240
6. Step 6: Final answer
   x = 237,150.14