Finding the Third Proportional to 213,328 and 493,868

Step by Step Solution

1. Step 1: Write the proportion equation
   213,328 : 493,868 = 493,868 : x
2. Step 2: Convert to fraction form
   213,328/493,868 = 493,868/x
3. Step 3: Cross multiply
   213,328x = 493,868 × 493,868
4. Step 4: Simplify right side
   213,328x = 243,905,601,424
5. Step 5: Solve for x
   x = 243,905,601,424/213,328
6. Step 6: Final answer
   x = 1,143,336.09