Finding the Third Proportional to 111,380 and 240,148

Step by Step Solution

1. Step 1: Write the proportion equation
   111,380 : 240,148 = 240,148 : x
2. Step 2: Convert to fraction form
   111,380/240,148 = 240,148/x
3. Step 3: Cross multiply
   111,380x = 240,148 × 240,148
4. Step 4: Simplify right side
   111,380x = 57,671,061,904
5. Step 5: Solve for x
   x = 57,671,061,904/111,380
6. Step 6: Final answer
   x = 517,786.51