Finding the Third Proportional to 485,280 and 1,054,393

Step by Step Solution

1. Step 1: Write the proportion equation
   485,280 : 1,054,393 = 1,054,393 : x
2. Step 2: Convert to fraction form
   485,280/1,054,393 = 1,054,393/x
3. Step 3: Cross multiply
   485,280x = 1,054,393 × 1,054,393
4. Step 4: Simplify right side
   485,280x = 1,111,744,598,449
5. Step 5: Solve for x
   x = 1,111,744,598,449/485,280
6. Step 6: Final answer
   x = 2,290,934.30