Finding the Third Proportional to 17,790 and 25,278

Step by Step Solution

1. Step 1: Write the proportion equation
   17,790 : 25,278 = 25,278 : x
2. Step 2: Convert to fraction form
   17,790/25,278 = 25,278/x
3. Step 3: Cross multiply
   17,790x = 25,278 × 25,278
4. Step 4: Simplify right side
   17,790x = 638,977,284
5. Step 5: Solve for x
   x = 638,977,284/17,790
6. Step 6: Final answer
   x = 35,917.78