Finding the Third Proportional to 10,020.80 and 21,647.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,020.80 : 21,647.67 = 21,647.67 : x
2. Step 2: Convert to fraction form
   10,020.80/21,647.67 = 21,647.67/x
3. Step 3: Cross multiply
   10,020.80x = 21,647.67 × 21,647.67
4. Step 4: Simplify right side
   10,020.80x = 468,621,697.61
5. Step 5: Solve for x
   x = 468,621,697.61/10,020.80
6. Step 6: Final answer
   x = 46,764.91