Finding the Third Proportional to 514,128 and 804,012

Step by Step Solution

1. Step 1: Write the proportion equation
   514,128 : 804,012 = 804,012 : x
2. Step 2: Convert to fraction form
   514,128/804,012 = 804,012/x
3. Step 3: Cross multiply
   514,128x = 804,012 × 804,012
4. Step 4: Simplify right side
   514,128x = 646,435,296,144
5. Step 5: Solve for x
   x = 646,435,296,144/514,128
6. Step 6: Final answer
   x = 1,257,343.11