Finding the Third Proportional to 65,306.81 and 133,380.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,306.81 : 133,380.56 = 133,380.56 : x
2. Step 2: Convert to fraction form
   65,306.81/133,380.56 = 133,380.56/x
3. Step 3: Cross multiply
   65,306.81x = 133,380.56 × 133,380.56
4. Step 4: Simplify right side
   65,306.81x = 17,790,374,452.82
5. Step 5: Solve for x
   x = 17,790,374,452.82/65,306.81
6. Step 6: Final answer
   x = 272,412.23