Finding the Third Proportional to 12,475 and 20,789

Step by Step Solution

1. Step 1: Write the proportion equation
   12,475 : 20,789 = 20,789 : x
2. Step 2: Convert to fraction form
   12,475/20,789 = 20,789/x
3. Step 3: Cross multiply
   12,475x = 20,789 × 20,789
4. Step 4: Simplify right side
   12,475x = 432,182,521
5. Step 5: Solve for x
   x = 432,182,521/12,475
6. Step 6: Final answer
   x = 34,643.89