Finding the Third Proportional to 308,314 and 672,507

Step by Step Solution

1. Step 1: Write the proportion equation
   308,314 : 672,507 = 672,507 : x
2. Step 2: Convert to fraction form
   308,314/672,507 = 672,507/x
3. Step 3: Cross multiply
   308,314x = 672,507 × 672,507
4. Step 4: Simplify right side
   308,314x = 452,265,665,049
5. Step 5: Solve for x
   x = 452,265,665,049/308,314
6. Step 6: Final answer
   x = 1,466,899.54