Finding the Third Proportional to 328,692 and 469,710

Step by Step Solution

1. Step 1: Write the proportion equation
   328,692 : 469,710 = 469,710 : x
2. Step 2: Convert to fraction form
   328,692/469,710 = 469,710/x
3. Step 3: Cross multiply
   328,692x = 469,710 × 469,710
4. Step 4: Simplify right side
   328,692x = 220,627,484,100
5. Step 5: Solve for x
   x = 220,627,484,100/328,692
6. Step 6: Final answer
   x = 671,228.64