Finding the Third Proportional to 318,096 and 693,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   318,096 : 693,355.50 = 693,355.50 : x
2. Step 2: Convert to fraction form
   318,096/693,355.50 = 693,355.50/x
3. Step 3: Cross multiply
   318,096x = 693,355.50 × 693,355.50
4. Step 4: Simplify right side
   318,096x = 480,741,849,380.25
5. Step 5: Solve for x
   x = 480,741,849,380.25/318,096
6. Step 6: Final answer
   x = 1,511,310.58