Finding the Third Proportional to 19,608 and 42,158

Step by Step Solution

1. Step 1: Write the proportion equation
   19,608 : 42,158 = 42,158 : x
2. Step 2: Convert to fraction form
   19,608/42,158 = 42,158/x
3. Step 3: Cross multiply
   19,608x = 42,158 × 42,158
4. Step 4: Simplify right side
   19,608x = 1,777,296,964
5. Step 5: Solve for x
   x = 1,777,296,964/19,608
6. Step 6: Final answer
   x = 90,641.42