Finding the Third Proportional to 58,704 and 123,240

Step by Step Solution

1. Step 1: Write the proportion equation
   58,704 : 123,240 = 123,240 : x
2. Step 2: Convert to fraction form
   58,704/123,240 = 123,240/x
3. Step 3: Cross multiply
   58,704x = 123,240 × 123,240
4. Step 4: Simplify right side
   58,704x = 15,188,097,600
5. Step 5: Solve for x
   x = 15,188,097,600/58,704
6. Step 6: Final answer
   x = 258,723.39