Finding the Third Proportional to 12,413 and 21,910

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413 : 21,910 = 21,910 : x
2. Step 2: Convert to fraction form
   12,413/21,910 = 21,910/x
3. Step 3: Cross multiply
   12,413x = 21,910 × 21,910
4. Step 4: Simplify right side
   12,413x = 480,048,100
5. Step 5: Solve for x
   x = 480,048,100/12,413
6. Step 6: Final answer
   x = 38,673.01