Finding the Third Proportional to 7,810 and 13,820

Step by Step Solution

1. Step 1: Write the proportion equation
   7,810 : 13,820 = 13,820 : x
2. Step 2: Convert to fraction form
   7,810/13,820 = 13,820/x
3. Step 3: Cross multiply
   7,810x = 13,820 × 13,820
4. Step 4: Simplify right side
   7,810x = 190,992,400
5. Step 5: Solve for x
   x = 190,992,400/7,810
6. Step 6: Final answer
   x = 24,454.85