Finding the Third Proportional to 53,318.53 and 123,434.58

Step by Step Solution

1. Step 1: Write the proportion equation
   53,318.53 : 123,434.58 = 123,434.58 : x
2. Step 2: Convert to fraction form
   53,318.53/123,434.58 = 123,434.58/x
3. Step 3: Cross multiply
   53,318.53x = 123,434.58 × 123,434.58
4. Step 4: Simplify right side
   53,318.53x = 15,236,095,076.90
5. Step 5: Solve for x
   x = 15,236,095,076.90/53,318.53
6. Step 6: Final answer
   x = 285,756.09