Finding the Third Proportional to 4,641.05 and 10,128.80

Step by Step Solution

1. Step 1: Write the proportion equation
   4,641.05 : 10,128.80 = 10,128.80 : x
2. Step 2: Convert to fraction form
   4,641.05/10,128.80 = 10,128.80/x
3. Step 3: Cross multiply
   4,641.05x = 10,128.80 × 10,128.80
4. Step 4: Simplify right side
   4,641.05x = 102,592,526.14
5. Step 5: Solve for x
   x = 102,592,526.14/4,641.05
6. Step 6: Final answer
   x = 22,105.47