Finding the Third Proportional to 118,418 and 254,404

Step by Step Solution

1. Step 1: Write the proportion equation
   118,418 : 254,404 = 254,404 : x
2. Step 2: Convert to fraction form
   118,418/254,404 = 254,404/x
3. Step 3: Cross multiply
   118,418x = 254,404 × 254,404
4. Step 4: Simplify right side
   118,418x = 64,721,395,216
5. Step 5: Solve for x
   x = 64,721,395,216/118,418
6. Step 6: Final answer
   x = 546,550.32