Finding the Third Proportional to 21,339 and 31,460

Step by Step Solution

1. Step 1: Write the proportion equation
   21,339 : 31,460 = 31,460 : x
2. Step 2: Convert to fraction form
   21,339/31,460 = 31,460/x
3. Step 3: Cross multiply
   21,339x = 31,460 × 31,460
4. Step 4: Simplify right side
   21,339x = 989,731,600
5. Step 5: Solve for x
   x = 989,731,600/21,339
6. Step 6: Final answer
   x = 46,381.35