Finding the Third Proportional to 476,238 and 648,546

Step by Step Solution

1. Step 1: Write the proportion equation
   476,238 : 648,546 = 648,546 : x
2. Step 2: Convert to fraction form
   476,238/648,546 = 648,546/x
3. Step 3: Cross multiply
   476,238x = 648,546 × 648,546
4. Step 4: Simplify right side
   476,238x = 420,611,914,116
5. Step 5: Solve for x
   x = 420,611,914,116/476,238
6. Step 6: Final answer
   x = 883,196.88