Finding the Third Proportional to 65,118.94 and 138,231.56

Step by Step Solution

1. Step 1: Write the proportion equation
   65,118.94 : 138,231.56 = 138,231.56 : x
2. Step 2: Convert to fraction form
   65,118.94/138,231.56 = 138,231.56/x
3. Step 3: Cross multiply
   65,118.94x = 138,231.56 × 138,231.56
4. Step 4: Simplify right side
   65,118.94x = 19,107,964,871.19
5. Step 5: Solve for x
   x = 19,107,964,871.19/65,118.94
6. Step 6: Final answer
   x = 293,431.77