Finding the Third Proportional to 65,604 and 139,800

Step by Step Solution

1. Step 1: Write the proportion equation
   65,604 : 139,800 = 139,800 : x
2. Step 2: Convert to fraction form
   65,604/139,800 = 139,800/x
3. Step 3: Cross multiply
   65,604x = 139,800 × 139,800
4. Step 4: Simplify right side
   65,604x = 19,544,040,000
5. Step 5: Solve for x
   x = 19,544,040,000/65,604
6. Step 6: Final answer
   x = 297,909.27