Finding the Third Proportional to 65,018.25 and 139,736.25

Step by Step Solution

1. Step 1: Write the proportion equation
   65,018.25 : 139,736.25 = 139,736.25 : x
2. Step 2: Convert to fraction form
   65,018.25/139,736.25 = 139,736.25/x
3. Step 3: Cross multiply
   65,018.25x = 139,736.25 × 139,736.25
4. Step 4: Simplify right side
   65,018.25x = 19,526,219,564.06
5. Step 5: Solve for x
   x = 19,526,219,564.06/65,018.25
6. Step 6: Final answer
   x = 300,319.06