Finding the Third Proportional to 12,372 and 18,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,372 : 18,664.50 = 18,664.50 : x
2. Step 2: Convert to fraction form
   12,372/18,664.50 = 18,664.50/x
3. Step 3: Cross multiply
   12,372x = 18,664.50 × 18,664.50
4. Step 4: Simplify right side
   12,372x = 348,363,560.25
5. Step 5: Solve for x
   x = 348,363,560.25/12,372
6. Step 6: Final answer
   x = 28,157.42