Finding the Third Proportional to 578,328 and 1,253,208

Step by Step Solution

1. Step 1: Write the proportion equation
   578,328 : 1,253,208 = 1,253,208 : x
2. Step 2: Convert to fraction form
   578,328/1,253,208 = 1,253,208/x
3. Step 3: Cross multiply
   578,328x = 1,253,208 × 1,253,208
4. Step 4: Simplify right side
   578,328x = 1,570,530,291,264
5. Step 5: Solve for x
   x = 1,570,530,291,264/578,328
6. Step 6: Final answer
   x = 2,715,639.38