Finding the Third Proportional to 351,388.50 and 770,493

Step by Step Solution

1. Step 1: Write the proportion equation
   351,388.50 : 770,493 = 770,493 : x
2. Step 2: Convert to fraction form
   351,388.50/770,493 = 770,493/x
3. Step 3: Cross multiply
   351,388.50x = 770,493 × 770,493
4. Step 4: Simplify right side
   351,388.50x = 593,659,463,049
5. Step 5: Solve for x
   x = 593,659,463,049/351,388.50
6. Step 6: Final answer
   x = 1,689,467.54