Finding the Third Proportional to 12,357 and 18,895.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,357 : 18,895.50 = 18,895.50 : x
2. Step 2: Convert to fraction form
   12,357/18,895.50 = 18,895.50/x
3. Step 3: Cross multiply
   12,357x = 18,895.50 × 18,895.50
4. Step 4: Simplify right side
   12,357x = 357,039,920.25
5. Step 5: Solve for x
   x = 357,039,920.25/12,357
6. Step 6: Final answer
   x = 28,893.74