Finding the Third Proportional to 58,339 and 127,978

Step by Step Solution

1. Step 1: Write the proportion equation
   58,339 : 127,978 = 127,978 : x
2. Step 2: Convert to fraction form
   58,339/127,978 = 127,978/x
3. Step 3: Cross multiply
   58,339x = 127,978 × 127,978
4. Step 4: Simplify right side
   58,339x = 16,378,368,484
5. Step 5: Solve for x
   x = 16,378,368,484/58,339
6. Step 6: Final answer
   x = 280,744.76