Finding the Third Proportional to 136,596.38 and 279,936

Step by Step Solution

1. Step 1: Write the proportion equation
   136,596.38 : 279,936 = 279,936 : x
2. Step 2: Convert to fraction form
   136,596.38/279,936 = 279,936/x
3. Step 3: Cross multiply
   136,596.38x = 279,936 × 279,936
4. Step 4: Simplify right side
   136,596.38x = 78,364,164,096
5. Step 5: Solve for x
   x = 78,364,164,096/136,596.38
6. Step 6: Final answer
   x = 573,691.39