Finding the Third Proportional to 68,240 and 148,256

Step by Step Solution

1. Step 1: Write the proportion equation
   68,240 : 148,256 = 148,256 : x
2. Step 2: Convert to fraction form
   68,240/148,256 = 148,256/x
3. Step 3: Cross multiply
   68,240x = 148,256 × 148,256
4. Step 4: Simplify right side
   68,240x = 21,979,841,536
5. Step 5: Solve for x
   x = 21,979,841,536/68,240
6. Step 6: Final answer
   x = 322,096.15