Finding the Third Proportional to 487,911 and 1,057,272

Step by Step Solution

1. Step 1: Write the proportion equation
   487,911 : 1,057,272 = 1,057,272 : x
2. Step 2: Convert to fraction form
   487,911/1,057,272 = 1,057,272/x
3. Step 3: Cross multiply
   487,911x = 1,057,272 × 1,057,272
4. Step 4: Simplify right side
   487,911x = 1,117,824,081,984
5. Step 5: Solve for x
   x = 1,117,824,081,984/487,911
6. Step 6: Final answer
   x = 2,291,040.95