Finding the Third Proportional to 12,520 and 19,499

Step by Step Solution

1. Step 1: Write the proportion equation
   12,520 : 19,499 = 19,499 : x
2. Step 2: Convert to fraction form
   12,520/19,499 = 19,499/x
3. Step 3: Cross multiply
   12,520x = 19,499 × 19,499
4. Step 4: Simplify right side
   12,520x = 380,211,001
5. Step 5: Solve for x
   x = 380,211,001/12,520
6. Step 6: Final answer
   x = 30,368.29