Finding the Third Proportional to 359,928.50 and 787,647

Step by Step Solution

1. Step 1: Write the proportion equation
   359,928.50 : 787,647 = 787,647 : x
2. Step 2: Convert to fraction form
   359,928.50/787,647 = 787,647/x
3. Step 3: Cross multiply
   359,928.50x = 787,647 × 787,647
4. Step 4: Simplify right side
   359,928.50x = 620,387,796,609
5. Step 5: Solve for x
   x = 620,387,796,609/359,928.50
6. Step 6: Final answer
   x = 1,723,641.77