Finding the Third Proportional to 19,128.75 and 41,645.63

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128.75 : 41,645.63 = 41,645.63 : x
2. Step 2: Convert to fraction form
   19,128.75/41,645.63 = 41,645.63/x
3. Step 3: Cross multiply
   19,128.75x = 41,645.63 × 41,645.63
4. Step 4: Simplify right side
   19,128.75x = 1,734,358,081.64
5. Step 5: Solve for x
   x = 1,734,358,081.64/19,128.75
6. Step 6: Final answer
   x = 90,667.61