Finding the Third Proportional to 430,974 and 682,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   430,974 : 682,090.50 = 682,090.50 : x
2. Step 2: Convert to fraction form
   430,974/682,090.50 = 682,090.50/x
3. Step 3: Cross multiply
   430,974x = 682,090.50 × 682,090.50
4. Step 4: Simplify right side
   430,974x = 465,247,450,190.25
5. Step 5: Solve for x
   x = 465,247,450,190.25/430,974
6. Step 6: Final answer
   x = 1,079,525.56