Finding the Third Proportional to 118,245 and 253,986

Step by Step Solution

1. Step 1: Write the proportion equation
   118,245 : 253,986 = 253,986 : x
2. Step 2: Convert to fraction form
   118,245/253,986 = 253,986/x
3. Step 3: Cross multiply
   118,245x = 253,986 × 253,986
4. Step 4: Simplify right side
   118,245x = 64,508,888,196
5. Step 5: Solve for x
   x = 64,508,888,196/118,245
6. Step 6: Final answer
   x = 545,552.78