Finding the Third Proportional to 19,611 and 42,621.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,611 : 42,621.75 = 42,621.75 : x
2. Step 2: Convert to fraction form
   19,611/42,621.75 = 42,621.75/x
3. Step 3: Cross multiply
   19,611x = 42,621.75 × 42,621.75
4. Step 4: Simplify right side
   19,611x = 1,816,613,573.06
5. Step 5: Solve for x
   x = 1,816,613,573.06/19,611
6. Step 6: Final answer
   x = 92,632.38