Finding the Third Proportional to 300,908 and 655,789

Step by Step Solution

1. Step 1: Write the proportion equation
   300,908 : 655,789 = 655,789 : x
2. Step 2: Convert to fraction form
   300,908/655,789 = 655,789/x
3. Step 3: Cross multiply
   300,908x = 655,789 × 655,789
4. Step 4: Simplify right side
   300,908x = 430,059,212,521
5. Step 5: Solve for x
   x = 430,059,212,521/300,908
6. Step 6: Final answer
   x = 1,429,204.98