Finding the Third Proportional to 81,508 and 123,928

Step by Step Solution

1. Step 1: Write the proportion equation
   81,508 : 123,928 = 123,928 : x
2. Step 2: Convert to fraction form
   81,508/123,928 = 123,928/x
3. Step 3: Cross multiply
   81,508x = 123,928 × 123,928
4. Step 4: Simplify right side
   81,508x = 15,358,149,184
5. Step 5: Solve for x
   x = 15,358,149,184/81,508
6. Step 6: Final answer
   x = 188,425.05