Finding the Third Proportional to 355,792.50 and 777,249

Step by Step Solution

1. Step 1: Write the proportion equation
   355,792.50 : 777,249 = 777,249 : x
2. Step 2: Convert to fraction form
   355,792.50/777,249 = 777,249/x
3. Step 3: Cross multiply
   355,792.50x = 777,249 × 777,249
4. Step 4: Simplify right side
   355,792.50x = 604,116,008,001
5. Step 5: Solve for x
   x = 604,116,008,001/355,792.50
6. Step 6: Final answer
   x = 1,697,944.75