Finding the Third Proportional to 485,680 and 723,538

Step by Step Solution

1. Step 1: Write the proportion equation
   485,680 : 723,538 = 723,538 : x
2. Step 2: Convert to fraction form
   485,680/723,538 = 723,538/x
3. Step 3: Cross multiply
   485,680x = 723,538 × 723,538
4. Step 4: Simplify right side
   485,680x = 523,507,237,444
5. Step 5: Solve for x
   x = 523,507,237,444/485,680
6. Step 6: Final answer
   x = 1,077,885.10