Finding the Third Proportional to 13,308 and 21,285

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308 : 21,285 = 21,285 : x
2. Step 2: Convert to fraction form
   13,308/21,285 = 21,285/x
3. Step 3: Cross multiply
   13,308x = 21,285 × 21,285
4. Step 4: Simplify right side
   13,308x = 453,051,225
5. Step 5: Solve for x
   x = 453,051,225/13,308
6. Step 6: Final answer
   x = 34,043.52