Finding the Third Proportional to 72,018.75 and 109,023.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,018.75 : 109,023.38 = 109,023.38 : x
2. Step 2: Convert to fraction form
   72,018.75/109,023.38 = 109,023.38/x
3. Step 3: Cross multiply
   72,018.75x = 109,023.38 × 109,023.38
4. Step 4: Simplify right side
   72,018.75x = 11,886,096,296.39
5. Step 5: Solve for x
   x = 11,886,096,296.39/72,018.75
6. Step 6: Final answer
   x = 165,041.69