Finding the Third Proportional to 20,398.50 and 45,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,398.50 : 45,166.50 = 45,166.50 : x
2. Step 2: Convert to fraction form
   20,398.50/45,166.50 = 45,166.50/x
3. Step 3: Cross multiply
   20,398.50x = 45,166.50 × 45,166.50
4. Step 4: Simplify right side
   20,398.50x = 2,040,012,722.25
5. Step 5: Solve for x
   x = 2,040,012,722.25/20,398.50
6. Step 6: Final answer
   x = 100,007.98