Finding the Third Proportional to 333,720 and 691,098.75

Step by Step Solution

1. Step 1: Write the proportion equation
   333,720 : 691,098.75 = 691,098.75 : x
2. Step 2: Convert to fraction form
   333,720/691,098.75 = 691,098.75/x
3. Step 3: Cross multiply
   333,720x = 691,098.75 × 691,098.75
4. Step 4: Simplify right side
   333,720x = 477,617,482,251.56
5. Step 5: Solve for x
   x = 477,617,482,251.56/333,720
6. Step 6: Final answer
   x = 1,431,192.26