Finding the Third Proportional to 68,667.75 and 140,109.75

Step by Step Solution

1. Step 1: Write the proportion equation
   68,667.75 : 140,109.75 = 140,109.75 : x
2. Step 2: Convert to fraction form
   68,667.75/140,109.75 = 140,109.75/x
3. Step 3: Cross multiply
   68,667.75x = 140,109.75 × 140,109.75
4. Step 4: Simplify right side
   68,667.75x = 19,630,742,045.06
5. Step 5: Solve for x
   x = 19,630,742,045.06/68,667.75
6. Step 6: Final answer
   x = 285,880.08