Finding the Third Proportional to 65,713.50 and 139,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,713.50 : 139,630.50 = 139,630.50 : x
2. Step 2: Convert to fraction form
   65,713.50/139,630.50 = 139,630.50/x
3. Step 3: Cross multiply
   65,713.50x = 139,630.50 × 139,630.50
4. Step 4: Simplify right side
   65,713.50x = 19,496,676,530.25
5. Step 5: Solve for x
   x = 19,496,676,530.25/65,713.50
6. Step 6: Final answer
   x = 296,692.10