Finding the Third Proportional to 19,128.38 and 28,108.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128.38 : 28,108.69 = 28,108.69 : x
2. Step 2: Convert to fraction form
   19,128.38/28,108.69 = 28,108.69/x
3. Step 3: Cross multiply
   19,128.38x = 28,108.69 × 28,108.69
4. Step 4: Simplify right side
   19,128.38x = 790,098,312.97
5. Step 5: Solve for x
   x = 790,098,312.97/19,128.38
6. Step 6: Final answer
   x = 41,305.04