Finding the Third Proportional to 128,051 and 139,533

Step by Step Solution

1. Step 1: Write the proportion equation
   128,051 : 139,533 = 139,533 : x
2. Step 2: Convert to fraction form
   128,051/139,533 = 139,533/x
3. Step 3: Cross multiply
   128,051x = 139,533 × 139,533
4. Step 4: Simplify right side
   128,051x = 19,469,458,089
5. Step 5: Solve for x
   x = 19,469,458,089/128,051
6. Step 6: Final answer
   x = 152,044.56