Finding the Third Proportional to 12,473 and 20,786

Step by Step Solution

1. Step 1: Write the proportion equation
   12,473 : 20,786 = 20,786 : x
2. Step 2: Convert to fraction form
   12,473/20,786 = 20,786/x
3. Step 3: Cross multiply
   12,473x = 20,786 × 20,786
4. Step 4: Simplify right side
   12,473x = 432,057,796
5. Step 5: Solve for x
   x = 432,057,796/12,473
6. Step 6: Final answer
   x = 34,639.44