Finding the Third Proportional to 116,490.38 and 254,790

Step by Step Solution

1. Step 1: Write the proportion equation
   116,490.38 : 254,790 = 254,790 : x
2. Step 2: Convert to fraction form
   116,490.38/254,790 = 254,790/x
3. Step 3: Cross multiply
   116,490.38x = 254,790 × 254,790
4. Step 4: Simplify right side
   116,490.38x = 64,917,944,100
5. Step 5: Solve for x
   x = 64,917,944,100/116,490.38
6. Step 6: Final answer
   x = 557,281.61