Finding the Third Proportional to 33,390 and 53,145

Step by Step Solution

1. Step 1: Write the proportion equation
   33,390 : 53,145 = 53,145 : x
2. Step 2: Convert to fraction form
   33,390/53,145 = 53,145/x
3. Step 3: Cross multiply
   33,390x = 53,145 × 53,145
4. Step 4: Simplify right side
   33,390x = 2,824,391,025
5. Step 5: Solve for x
   x = 2,824,391,025/33,390
6. Step 6: Final answer
   x = 84,587.93