Finding the Third Proportional to 13,859 and 30,412

Step by Step Solution

1. Step 1: Write the proportion equation
   13,859 : 30,412 = 30,412 : x
2. Step 2: Convert to fraction form
   13,859/30,412 = 30,412/x
3. Step 3: Cross multiply
   13,859x = 30,412 × 30,412
4. Step 4: Simplify right side
   13,859x = 924,889,744
5. Step 5: Solve for x
   x = 924,889,744/13,859
6. Step 6: Final answer
   x = 66,735.68