Finding the Third Proportional to 639,354 and 954,654

Step by Step Solution

1. Step 1: Write the proportion equation
   639,354 : 954,654 = 954,654 : x
2. Step 2: Convert to fraction form
   639,354/954,654 = 954,654/x
3. Step 3: Cross multiply
   639,354x = 954,654 × 954,654
4. Step 4: Simplify right side
   639,354x = 911,364,259,716
5. Step 5: Solve for x
   x = 911,364,259,716/639,354
6. Step 6: Final answer
   x = 1,425,445.46