Finding the Third Proportional to 118,258 and 254,010

Step by Step Solution

1. Step 1: Write the proportion equation
   118,258 : 254,010 = 254,010 : x
2. Step 2: Convert to fraction form
   118,258/254,010 = 254,010/x
3. Step 3: Cross multiply
   118,258x = 254,010 × 254,010
4. Step 4: Simplify right side
   118,258x = 64,521,080,100
5. Step 5: Solve for x
   x = 64,521,080,100/118,258
6. Step 6: Final answer
   x = 545,595.90