Finding the Third Proportional to 647,478 and 958,654

Step by Step Solution

1. Step 1: Write the proportion equation
   647,478 : 958,654 = 958,654 : x
2. Step 2: Convert to fraction form
   647,478/958,654 = 958,654/x
3. Step 3: Cross multiply
   647,478x = 958,654 × 958,654
4. Step 4: Simplify right side
   647,478x = 919,017,491,716
5. Step 5: Solve for x
   x = 919,017,491,716/647,478
6. Step 6: Final answer
   x = 1,419,380.26