Finding the Third Proportional to 19,662.75 and 42,454.13

Step by Step Solution

1. Step 1: Write the proportion equation
   19,662.75 : 42,454.13 = 42,454.13 : x
2. Step 2: Convert to fraction form
   19,662.75/42,454.13 = 42,454.13/x
3. Step 3: Cross multiply
   19,662.75x = 42,454.13 × 42,454.13
4. Step 4: Simplify right side
   19,662.75x = 1,802,352,729.52
5. Step 5: Solve for x
   x = 1,802,352,729.52/19,662.75
6. Step 6: Final answer
   x = 91,663.31