Finding the Third Proportional to 12,492 and 19,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,492 : 19,120.50 = 19,120.50 : x
2. Step 2: Convert to fraction form
   12,492/19,120.50 = 19,120.50/x
3. Step 3: Cross multiply
   12,492x = 19,120.50 × 19,120.50
4. Step 4: Simplify right side
   12,492x = 365,593,520.25
5. Step 5: Solve for x
   x = 365,593,520.25/12,492
6. Step 6: Final answer
   x = 29,266.21