Finding the Third Proportional to 108,264 and 168,290

Step by Step Solution

1. Step 1: Write the proportion equation
   108,264 : 168,290 = 168,290 : x
2. Step 2: Convert to fraction form
   108,264/168,290 = 168,290/x
3. Step 3: Cross multiply
   108,264x = 168,290 × 168,290
4. Step 4: Simplify right side
   108,264x = 28,321,524,100
5. Step 5: Solve for x
   x = 28,321,524,100/108,264
6. Step 6: Final answer
   x = 261,596.88