Finding the Third Proportional to 355,441.50 and 782,928

Step by Step Solution

1. Step 1: Write the proportion equation
   355,441.50 : 782,928 = 782,928 : x
2. Step 2: Convert to fraction form
   355,441.50/782,928 = 782,928/x
3. Step 3: Cross multiply
   355,441.50x = 782,928 × 782,928
4. Step 4: Simplify right side
   355,441.50x = 612,976,253,184
5. Step 5: Solve for x
   x = 612,976,253,184/355,441.50
6. Step 6: Final answer
   x = 1,724,548.92