Finding the Third Proportional to 311,288 and 468,188

Step by Step Solution

1. Step 1: Write the proportion equation
   311,288 : 468,188 = 468,188 : x
2. Step 2: Convert to fraction form
   311,288/468,188 = 468,188/x
3. Step 3: Cross multiply
   311,288x = 468,188 × 468,188
4. Step 4: Simplify right side
   311,288x = 219,200,003,344
5. Step 5: Solve for x
   x = 219,200,003,344/311,288
6. Step 6: Final answer
   x = 704,171.07