Finding the Third Proportional to 72,009 and 113,112

Step by Step Solution

1. Step 1: Write the proportion equation
   72,009 : 113,112 = 113,112 : x
2. Step 2: Convert to fraction form
   72,009/113,112 = 113,112/x
3. Step 3: Cross multiply
   72,009x = 113,112 × 113,112
4. Step 4: Simplify right side
   72,009x = 12,794,324,544
5. Step 5: Solve for x
   x = 12,794,324,544/72,009
6. Step 6: Final answer
   x = 177,676.74