Finding the Third Proportional to 128,060.50 and 187,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,060.50 : 187,936.50 = 187,936.50 : x
2. Step 2: Convert to fraction form
   128,060.50/187,936.50 = 187,936.50/x
3. Step 3: Cross multiply
   128,060.50x = 187,936.50 × 187,936.50
4. Step 4: Simplify right side
   128,060.50x = 35,320,128,032.25
5. Step 5: Solve for x
   x = 35,320,128,032.25/128,060.50
6. Step 6: Final answer
   x = 275,808.14