Finding the Third Proportional to 13,820 and 30,336

Step by Step Solution

1. Step 1: Write the proportion equation
   13,820 : 30,336 = 30,336 : x
2. Step 2: Convert to fraction form
   13,820/30,336 = 30,336/x
3. Step 3: Cross multiply
   13,820x = 30,336 × 30,336
4. Step 4: Simplify right side
   13,820x = 920,272,896
5. Step 5: Solve for x
   x = 920,272,896/13,820
6. Step 6: Final answer
   x = 66,589.93