Finding the Third Proportional to 368,113.50 and 778,662

Step by Step Solution

1. Step 1: Write the proportion equation
   368,113.50 : 778,662 = 778,662 : x
2. Step 2: Convert to fraction form
   368,113.50/778,662 = 778,662/x
3. Step 3: Cross multiply
   368,113.50x = 778,662 × 778,662
4. Step 4: Simplify right side
   368,113.50x = 606,314,510,244
5. Step 5: Solve for x
   x = 606,314,510,244/368,113.50
6. Step 6: Final answer
   x = 1,647,085.78