Finding the Third Proportional to 116,600 and 251,040

Step by Step Solution

1. Step 1: Write the proportion equation
   116,600 : 251,040 = 251,040 : x
2. Step 2: Convert to fraction form
   116,600/251,040 = 251,040/x
3. Step 3: Cross multiply
   116,600x = 251,040 × 251,040
4. Step 4: Simplify right side
   116,600x = 63,021,081,600
5. Step 5: Solve for x
   x = 63,021,081,600/116,600
6. Step 6: Final answer
   x = 540,489.55