Finding the Third Proportional to 308,499 and 676,086

Step by Step Solution

1. Step 1: Write the proportion equation
   308,499 : 676,086 = 676,086 : x
2. Step 2: Convert to fraction form
   308,499/676,086 = 676,086/x
3. Step 3: Cross multiply
   308,499x = 676,086 × 676,086
4. Step 4: Simplify right side
   308,499x = 457,092,279,396
5. Step 5: Solve for x
   x = 457,092,279,396/308,499
6. Step 6: Final answer
   x = 1,481,665.35