Finding the Third Proportional to 477,128 and 1,028,986

Step by Step Solution

1. Step 1: Write the proportion equation
   477,128 : 1,028,986 = 1,028,986 : x
2. Step 2: Convert to fraction form
   477,128/1,028,986 = 1,028,986/x
3. Step 3: Cross multiply
   477,128x = 1,028,986 × 1,028,986
4. Step 4: Simplify right side
   477,128x = 1,058,812,188,196
5. Step 5: Solve for x
   x = 1,058,812,188,196/477,128
6. Step 6: Final answer
   x = 2,219,136.56