Finding the Third Proportional to 58,945 and 128,150

Step by Step Solution

1. Step 1: Write the proportion equation
   58,945 : 128,150 = 128,150 : x
2. Step 2: Convert to fraction form
   58,945/128,150 = 128,150/x
3. Step 3: Cross multiply
   58,945x = 128,150 × 128,150
4. Step 4: Simplify right side
   58,945x = 16,422,422,500
5. Step 5: Solve for x
   x = 16,422,422,500/58,945
6. Step 6: Final answer
   x = 278,605.86