Finding the Third Proportional to 121,401.75 and 247,620

Step by Step Solution

1. Step 1: Write the proportion equation
   121,401.75 : 247,620 = 247,620 : x
2. Step 2: Convert to fraction form
   121,401.75/247,620 = 247,620/x
3. Step 3: Cross multiply
   121,401.75x = 247,620 × 247,620
4. Step 4: Simplify right side
   121,401.75x = 61,315,664,400
5. Step 5: Solve for x
   x = 61,315,664,400/121,401.75
6. Step 6: Final answer
   x = 505,064.09