Finding the Third Proportional to 12,458 and 21,495

Step by Step Solution

1. Step 1: Write the proportion equation
   12,458 : 21,495 = 21,495 : x
2. Step 2: Convert to fraction form
   12,458/21,495 = 21,495/x
3. Step 3: Cross multiply
   12,458x = 21,495 × 21,495
4. Step 4: Simplify right side
   12,458x = 462,035,025
5. Step 5: Solve for x
   x = 462,035,025/12,458
6. Step 6: Final answer
   x = 37,087.42