Finding the Third Proportional to 329,370 and 670,404

Step by Step Solution

1. Step 1: Write the proportion equation
   329,370 : 670,404 = 670,404 : x
2. Step 2: Convert to fraction form
   329,370/670,404 = 670,404/x
3. Step 3: Cross multiply
   329,370x = 670,404 × 670,404
4. Step 4: Simplify right side
   329,370x = 449,441,523,216
5. Step 5: Solve for x
   x = 449,441,523,216/329,370
6. Step 6: Final answer
   x = 1,364,549.06