Finding the Third Proportional to 58,439 and 124,978

Step by Step Solution

1. Step 1: Write the proportion equation
   58,439 : 124,978 = 124,978 : x
2. Step 2: Convert to fraction form
   58,439/124,978 = 124,978/x
3. Step 3: Cross multiply
   58,439x = 124,978 × 124,978
4. Step 4: Simplify right side
   58,439x = 15,619,500,484
5. Step 5: Solve for x
   x = 15,619,500,484/58,439
6. Step 6: Final answer
   x = 267,278.71