Finding the Third Proportional to 49,440 and 62,640

Step by Step Solution

1. Step 1: Write the proportion equation
   49,440 : 62,640 = 62,640 : x
2. Step 2: Convert to fraction form
   49,440/62,640 = 62,640/x
3. Step 3: Cross multiply
   49,440x = 62,640 × 62,640
4. Step 4: Simplify right side
   49,440x = 3,923,769,600
5. Step 5: Solve for x
   x = 3,923,769,600/49,440
6. Step 6: Final answer
   x = 79,364.27