Finding the Third Proportional to 111,908 and 228,985

Step by Step Solution

1. Step 1: Write the proportion equation
   111,908 : 228,985 = 228,985 : x
2. Step 2: Convert to fraction form
   111,908/228,985 = 228,985/x
3. Step 3: Cross multiply
   111,908x = 228,985 × 228,985
4. Step 4: Simplify right side
   111,908x = 52,434,130,225
5. Step 5: Solve for x
   x = 52,434,130,225/111,908
6. Step 6: Final answer
   x = 468,546.75