Finding the Third Proportional to 42,042 and 65,099

Step by Step Solution

1. Step 1: Write the proportion equation
   42,042 : 65,099 = 65,099 : x
2. Step 2: Convert to fraction form
   42,042/65,099 = 65,099/x
3. Step 3: Cross multiply
   42,042x = 65,099 × 65,099
4. Step 4: Simplify right side
   42,042x = 4,237,879,801
5. Step 5: Solve for x
   x = 4,237,879,801/42,042
6. Step 6: Final answer
   x = 100,801.10