Finding the Third Proportional to 13,860 and 30,487

Step by Step Solution

1. Step 1: Write the proportion equation
   13,860 : 30,487 = 30,487 : x
2. Step 2: Convert to fraction form
   13,860/30,487 = 30,487/x
3. Step 3: Cross multiply
   13,860x = 30,487 × 30,487
4. Step 4: Simplify right side
   13,860x = 929,457,169
5. Step 5: Solve for x
   x = 929,457,169/13,860
6. Step 6: Final answer
   x = 67,060.40