Finding the Third Proportional to 12,590 and 19,630

Step by Step Solution

1. Step 1: Write the proportion equation
   12,590 : 19,630 = 19,630 : x
2. Step 2: Convert to fraction form
   12,590/19,630 = 19,630/x
3. Step 3: Cross multiply
   12,590x = 19,630 × 19,630
4. Step 4: Simplify right side
   12,590x = 385,336,900
5. Step 5: Solve for x
   x = 385,336,900/12,590
6. Step 6: Final answer
   x = 30,606.58