Finding the Third Proportional to 30,390 and 46,648

Step by Step Solution

1. Step 1: Write the proportion equation
   30,390 : 46,648 = 46,648 : x
2. Step 2: Convert to fraction form
   30,390/46,648 = 46,648/x
3. Step 3: Cross multiply
   30,390x = 46,648 × 46,648
4. Step 4: Simplify right side
   30,390x = 2,176,035,904
5. Step 5: Solve for x
   x = 2,176,035,904/30,390
6. Step 6: Final answer
   x = 71,603.68