Finding the Third Proportional to 377,328 and 813,456

Step by Step Solution

1. Step 1: Write the proportion equation
   377,328 : 813,456 = 813,456 : x
2. Step 2: Convert to fraction form
   377,328/813,456 = 813,456/x
3. Step 3: Cross multiply
   377,328x = 813,456 × 813,456
4. Step 4: Simplify right side
   377,328x = 661,710,663,936
5. Step 5: Solve for x
   x = 661,710,663,936/377,328
6. Step 6: Final answer
   x = 1,753,674.96