Finding the Third Proportional to 65,480.25 and 140,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,480.25 : 140,518.50 = 140,518.50 : x
2. Step 2: Convert to fraction form
   65,480.25/140,518.50 = 140,518.50/x
3. Step 3: Cross multiply
   65,480.25x = 140,518.50 × 140,518.50
4. Step 4: Simplify right side
   65,480.25x = 19,745,448,842.25
5. Step 5: Solve for x
   x = 19,745,448,842.25/65,480.25
6. Step 6: Final answer
   x = 301,548.16