Finding the Third Proportional to 121,255.50 and 263,496

Step by Step Solution

1. Step 1: Write the proportion equation
   121,255.50 : 263,496 = 263,496 : x
2. Step 2: Convert to fraction form
   121,255.50/263,496 = 263,496/x
3. Step 3: Cross multiply
   121,255.50x = 263,496 × 263,496
4. Step 4: Simplify right side
   121,255.50x = 69,430,142,016
5. Step 5: Solve for x
   x = 69,430,142,016/121,255.50
6. Step 6: Final answer
   x = 572,593.75