Finding the Third Proportional to 21,312 and 33,090

Step by Step Solution

1. Step 1: Write the proportion equation
   21,312 : 33,090 = 33,090 : x
2. Step 2: Convert to fraction form
   21,312/33,090 = 33,090/x
3. Step 3: Cross multiply
   21,312x = 33,090 × 33,090
4. Step 4: Simplify right side
   21,312x = 1,094,948,100
5. Step 5: Solve for x
   x = 1,094,948,100/21,312
6. Step 6: Final answer
   x = 51,377.07