Finding the Third Proportional to 117,254 and 238,648

Step by Step Solution

1. Step 1: Write the proportion equation
   117,254 : 238,648 = 238,648 : x
2. Step 2: Convert to fraction form
   117,254/238,648 = 238,648/x
3. Step 3: Cross multiply
   117,254x = 238,648 × 238,648
4. Step 4: Simplify right side
   117,254x = 56,952,867,904
5. Step 5: Solve for x
   x = 56,952,867,904/117,254
6. Step 6: Final answer
   x = 485,722.17