Finding the Third Proportional to 54,840.38 and 118,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   54,840.38 : 118,978.88 = 118,978.88 : x
2. Step 2: Convert to fraction form
   54,840.38/118,978.88 = 118,978.88/x
3. Step 3: Cross multiply
   54,840.38x = 118,978.88 × 118,978.88
4. Step 4: Simplify right side
   54,840.38x = 14,155,972,696.27
5. Step 5: Solve for x
   x = 14,155,972,696.27/54,840.38
6. Step 6: Final answer
   x = 258,130.49