Finding the Third Proportional to 151,401.75 and 318,486

Step by Step Solution

1. Step 1: Write the proportion equation
   151,401.75 : 318,486 = 318,486 : x
2. Step 2: Convert to fraction form
   151,401.75/318,486 = 318,486/x
3. Step 3: Cross multiply
   151,401.75x = 318,486 × 318,486
4. Step 4: Simplify right side
   151,401.75x = 101,433,332,196
5. Step 5: Solve for x
   x = 101,433,332,196/151,401.75
6. Step 6: Final answer
   x = 669,961.43