Finding the Third Proportional to 307,298.50 and 670,634

Step by Step Solution

1. Step 1: Write the proportion equation
   307,298.50 : 670,634 = 670,634 : x
2. Step 2: Convert to fraction form
   307,298.50/670,634 = 670,634/x
3. Step 3: Cross multiply
   307,298.50x = 670,634 × 670,634
4. Step 4: Simplify right side
   307,298.50x = 449,749,961,956
5. Step 5: Solve for x
   x = 449,749,961,956/307,298.50
6. Step 6: Final answer
   x = 1,463,560.55