Finding the Third Proportional to 308,583 and 655,074

Step by Step Solution

1. Step 1: Write the proportion equation
   308,583 : 655,074 = 655,074 : x
2. Step 2: Convert to fraction form
   308,583/655,074 = 655,074/x
3. Step 3: Cross multiply
   308,583x = 655,074 × 655,074
4. Step 4: Simplify right side
   308,583x = 429,121,945,476
5. Step 5: Solve for x
   x = 429,121,945,476/308,583
6. Step 6: Final answer
   x = 1,390,620.82