Finding the Third Proportional to 259,644.50 and 539,928

Step by Step Solution

1. Step 1: Write the proportion equation
   259,644.50 : 539,928 = 539,928 : x
2. Step 2: Convert to fraction form
   259,644.50/539,928 = 539,928/x
3. Step 3: Cross multiply
   259,644.50x = 539,928 × 539,928
4. Step 4: Simplify right side
   259,644.50x = 291,522,245,184
5. Step 5: Solve for x
   x = 291,522,245,184/259,644.50
6. Step 6: Final answer
   x = 1,122,774.58