Finding the Third Proportional to 291,378.94 and 443,144.25

Step by Step Solution

1. Step 1: Write the proportion equation
   291,378.94 : 443,144.25 = 443,144.25 : x
2. Step 2: Convert to fraction form
   291,378.94/443,144.25 = 443,144.25/x
3. Step 3: Cross multiply
   291,378.94x = 443,144.25 × 443,144.25
4. Step 4: Simplify right side
   291,378.94x = 196,376,826,308.06
5. Step 5: Solve for x
   x = 196,376,826,308.06/291,378.94
6. Step 6: Final answer
   x = 673,956.83