Finding the Third Proportional to 53,328.38 and 123,456.66

Step by Step Solution

1. Step 1: Write the proportion equation
   53,328.38 : 123,456.66 = 123,456.66 : x
2. Step 2: Convert to fraction form
   53,328.38/123,456.66 = 123,456.66/x
3. Step 3: Cross multiply
   53,328.38x = 123,456.66 × 123,456.66
4. Step 4: Simplify right side
   53,328.38x = 15,241,545,972.43
5. Step 5: Solve for x
   x = 15,241,545,972.43/53,328.38
6. Step 6: Final answer
   x = 285,805.56