Finding the Third Proportional to 13,172 and 27,820

Step by Step Solution

1. Step 1: Write the proportion equation
   13,172 : 27,820 = 27,820 : x
2. Step 2: Convert to fraction form
   13,172/27,820 = 27,820/x
3. Step 3: Cross multiply
   13,172x = 27,820 × 27,820
4. Step 4: Simplify right side
   13,172x = 773,952,400
5. Step 5: Solve for x
   x = 773,952,400/13,172
6. Step 6: Final answer
   x = 58,757.39