Finding the Third Proportional to 333,717 and 691,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   333,717 : 691,090.50 = 691,090.50 : x
2. Step 2: Convert to fraction form
   333,717/691,090.50 = 691,090.50/x
3. Step 3: Cross multiply
   333,717x = 691,090.50 × 691,090.50
4. Step 4: Simplify right side
   333,717x = 477,606,079,190.25
5. Step 5: Solve for x
   x = 477,606,079,190.25/333,717
6. Step 6: Final answer
   x = 1,431,170.96