Finding the Third Proportional to 109,068 and 231,318

Step by Step Solution

1. Step 1: Write the proportion equation
   109,068 : 231,318 = 231,318 : x
2. Step 2: Convert to fraction form
   109,068/231,318 = 231,318/x
3. Step 3: Cross multiply
   109,068x = 231,318 × 231,318
4. Step 4: Simplify right side
   109,068x = 53,508,017,124
5. Step 5: Solve for x
   x = 53,508,017,124/109,068
6. Step 6: Final answer
   x = 490,593.18