Finding the Third Proportional to 65,110.50 and 134,770.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,110.50 : 134,770.50 = 134,770.50 : x
2. Step 2: Convert to fraction form
   65,110.50/134,770.50 = 134,770.50/x
3. Step 3: Cross multiply
   65,110.50x = 134,770.50 × 134,770.50
4. Step 4: Simplify right side
   65,110.50x = 18,163,087,670.25
5. Step 5: Solve for x
   x = 18,163,087,670.25/65,110.50
6. Step 6: Final answer
   x = 278,957.89