Finding the Third Proportional to 9,145 and 19,910

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145 : 19,910 = 19,910 : x
2. Step 2: Convert to fraction form
   9,145/19,910 = 19,910/x
3. Step 3: Cross multiply
   9,145x = 19,910 × 19,910
4. Step 4: Simplify right side
   9,145x = 396,408,100
5. Step 5: Solve for x
   x = 396,408,100/9,145
6. Step 6: Final answer
   x = 43,346.98