Finding the Third Proportional to 684,687 and 908,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   684,687 : 908,716.50 = 908,716.50 : x
2. Step 2: Convert to fraction form
   684,687/908,716.50 = 908,716.50/x
3. Step 3: Cross multiply
   684,687x = 908,716.50 × 908,716.50
4. Step 4: Simplify right side
   684,687x = 825,765,677,372.25
5. Step 5: Solve for x
   x = 825,765,677,372.25/684,687
6. Step 6: Final answer
   x = 1,206,048.42