Finding the Third Proportional to 123,322.50 and 255,393

Step by Step Solution

1. Step 1: Write the proportion equation
   123,322.50 : 255,393 = 255,393 : x
2. Step 2: Convert to fraction form
   123,322.50/255,393 = 255,393/x
3. Step 3: Cross multiply
   123,322.50x = 255,393 × 255,393
4. Step 4: Simplify right side
   123,322.50x = 65,225,584,449
5. Step 5: Solve for x
   x = 65,225,584,449/123,322.50
6. Step 6: Final answer
   x = 528,902.55