Finding the Third Proportional to 118,178 and 254,908

Step by Step Solution

1. Step 1: Write the proportion equation
   118,178 : 254,908 = 254,908 : x
2. Step 2: Convert to fraction form
   118,178/254,908 = 254,908/x
3. Step 3: Cross multiply
   118,178x = 254,908 × 254,908
4. Step 4: Simplify right side
   118,178x = 64,978,088,464
5. Step 5: Solve for x
   x = 64,978,088,464/118,178
6. Step 6: Final answer
   x = 549,832.36