Finding the Third Proportional to 100,328 and 208,960

Step by Step Solution

1. Step 1: Write the proportion equation
   100,328 : 208,960 = 208,960 : x
2. Step 2: Convert to fraction form
   100,328/208,960 = 208,960/x
3. Step 3: Cross multiply
   100,328x = 208,960 × 208,960
4. Step 4: Simplify right side
   100,328x = 43,664,281,600
5. Step 5: Solve for x
   x = 43,664,281,600/100,328
6. Step 6: Final answer
   x = 435,215.31