Finding the Third Proportional to 65,280 and 140,928

Step by Step Solution

1. Step 1: Write the proportion equation
   65,280 : 140,928 = 140,928 : x
2. Step 2: Convert to fraction form
   65,280/140,928 = 140,928/x
3. Step 3: Cross multiply
   65,280x = 140,928 × 140,928
4. Step 4: Simplify right side
   65,280x = 19,860,701,184
5. Step 5: Solve for x
   x = 19,860,701,184/65,280
6. Step 6: Final answer
   x = 304,238.68