Finding the Third Proportional to 362,662.50 and 778,843.50

Step by Step Solution

1. Step 1: Write the proportion equation
   362,662.50 : 778,843.50 = 778,843.50 : x
2. Step 2: Convert to fraction form
   362,662.50/778,843.50 = 778,843.50/x
3. Step 3: Cross multiply
   362,662.50x = 778,843.50 × 778,843.50
4. Step 4: Simplify right side
   362,662.50x = 606,597,197,492.25
5. Step 5: Solve for x
   x = 606,597,197,492.25/362,662.50
6. Step 6: Final answer
   x = 1,672,621.78