Finding the Third Proportional to 13,412 and 30,290

Step by Step Solution

1. Step 1: Write the proportion equation
   13,412 : 30,290 = 30,290 : x
2. Step 2: Convert to fraction form
   13,412/30,290 = 30,290/x
3. Step 3: Cross multiply
   13,412x = 30,290 × 30,290
4. Step 4: Simplify right side
   13,412x = 917,484,100
5. Step 5: Solve for x
   x = 917,484,100/13,412
6. Step 6: Final answer
   x = 68,407.70