Finding the Third Proportional to 88,137 and 187,128

Step by Step Solution

1. Step 1: Write the proportion equation
   88,137 : 187,128 = 187,128 : x
2. Step 2: Convert to fraction form
   88,137/187,128 = 187,128/x
3. Step 3: Cross multiply
   88,137x = 187,128 × 187,128
4. Step 4: Simplify right side
   88,137x = 35,016,888,384
5. Step 5: Solve for x
   x = 35,016,888,384/88,137
6. Step 6: Final answer
   x = 397,300.66