Finding the Third Proportional to 12,398.50 and 25,457

Step by Step Solution

1. Step 1: Write the proportion equation
   12,398.50 : 25,457 = 25,457 : x
2. Step 2: Convert to fraction form
   12,398.50/25,457 = 25,457/x
3. Step 3: Cross multiply
   12,398.50x = 25,457 × 25,457
4. Step 4: Simplify right side
   12,398.50x = 648,058,849
5. Step 5: Solve for x
   x = 648,058,849/12,398.50
6. Step 6: Final answer
   x = 52,269.13