Finding the Third Proportional to 9,939.38 and 21,837.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.38 : 21,837.94 = 21,837.94 : x
2. Step 2: Convert to fraction form
   9,939.38/21,837.94 = 21,837.94/x
3. Step 3: Cross multiply
   9,939.38x = 21,837.94 × 21,837.94
4. Step 4: Simplify right side
   9,939.38x = 476,895,514.25
5. Step 5: Solve for x
   x = 476,895,514.25/9,939.38
6. Step 6: Final answer
   x = 47,980.43