Finding the Third Proportional to 19,128 and 28,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128 : 28,108.50 = 28,108.50 : x
2. Step 2: Convert to fraction form
   19,128/28,108.50 = 28,108.50/x
3. Step 3: Cross multiply
   19,128x = 28,108.50 × 28,108.50
4. Step 4: Simplify right side
   19,128x = 790,087,772.25
5. Step 5: Solve for x
   x = 790,087,772.25/19,128
6. Step 6: Final answer
   x = 41,305.30