Finding the Third Proportional to 31,320 and 46,440

Step by Step Solution

1. Step 1: Write the proportion equation
   31,320 : 46,440 = 46,440 : x
2. Step 2: Convert to fraction form
   31,320/46,440 = 46,440/x
3. Step 3: Cross multiply
   31,320x = 46,440 × 46,440
4. Step 4: Simplify right side
   31,320x = 2,156,673,600
5. Step 5: Solve for x
   x = 2,156,673,600/31,320
6. Step 6: Final answer
   x = 68,859.31