Finding the Third Proportional to 12,480 and 19,242

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480 : 19,242 = 19,242 : x
2. Step 2: Convert to fraction form
   12,480/19,242 = 19,242/x
3. Step 3: Cross multiply
   12,480x = 19,242 × 19,242
4. Step 4: Simplify right side
   12,480x = 370,254,564
5. Step 5: Solve for x
   x = 370,254,564/12,480
6. Step 6: Final answer
   x = 29,667.83