Finding the Third Proportional to 21,166 and 50,139

Step by Step Solution

1. Step 1: Write the proportion equation
   21,166 : 50,139 = 50,139 : x
2. Step 2: Convert to fraction form
   21,166/50,139 = 50,139/x
3. Step 3: Cross multiply
   21,166x = 50,139 × 50,139
4. Step 4: Simplify right side
   21,166x = 2,513,919,321
5. Step 5: Solve for x
   x = 2,513,919,321/21,166
6. Step 6: Final answer
   x = 118,771.58