Finding the Third Proportional to 63,131.50 and 140,276

Step by Step Solution

1. Step 1: Write the proportion equation
   63,131.50 : 140,276 = 140,276 : x
2. Step 2: Convert to fraction form
   63,131.50/140,276 = 140,276/x
3. Step 3: Cross multiply
   63,131.50x = 140,276 × 140,276
4. Step 4: Simplify right side
   63,131.50x = 19,677,356,176
5. Step 5: Solve for x
   x = 19,677,356,176/63,131.50
6. Step 6: Final answer
   x = 311,688.40