Finding the Third Proportional to 12,280 and 19,210

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280 : 19,210 = 19,210 : x
2. Step 2: Convert to fraction form
   12,280/19,210 = 19,210/x
3. Step 3: Cross multiply
   12,280x = 19,210 × 19,210
4. Step 4: Simplify right side
   12,280x = 369,024,100
5. Step 5: Solve for x
   x = 369,024,100/12,280
6. Step 6: Final answer
   x = 30,050.82