Finding the Third Proportional to 72,990 and 110,007

Step by Step Solution

1. Step 1: Write the proportion equation
   72,990 : 110,007 = 110,007 : x
2. Step 2: Convert to fraction form
   72,990/110,007 = 110,007/x
3. Step 3: Cross multiply
   72,990x = 110,007 × 110,007
4. Step 4: Simplify right side
   72,990x = 12,101,540,049
5. Step 5: Solve for x
   x = 12,101,540,049/72,990
6. Step 6: Final answer
   x = 165,797.23