Finding the Third Proportional to 9,129.75 and 19,625.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.75 : 19,625.25 = 19,625.25 : x
2. Step 2: Convert to fraction form
   9,129.75/19,625.25 = 19,625.25/x
3. Step 3: Cross multiply
   9,129.75x = 19,625.25 × 19,625.25
4. Step 4: Simplify right side
   9,129.75x = 385,150,437.56
5. Step 5: Solve for x
   x = 385,150,437.56/9,129.75
6. Step 6: Final answer
   x = 42,186.31