Finding the Third Proportional to 136,608 and 279,960

Step by Step Solution

1. Step 1: Write the proportion equation
   136,608 : 279,960 = 279,960 : x
2. Step 2: Convert to fraction form
   136,608/279,960 = 279,960/x
3. Step 3: Cross multiply
   136,608x = 279,960 × 279,960
4. Step 4: Simplify right side
   136,608x = 78,377,601,600
5. Step 5: Solve for x
   x = 78,377,601,600/136,608
6. Step 6: Final answer
   x = 573,740.93