Finding the Third Proportional to 63,360 and 139,790

Step by Step Solution

1. Step 1: Write the proportion equation
   63,360 : 139,790 = 139,790 : x
2. Step 2: Convert to fraction form
   63,360/139,790 = 139,790/x
3. Step 3: Cross multiply
   63,360x = 139,790 × 139,790
4. Step 4: Simplify right side
   63,360x = 19,541,244,100
5. Step 5: Solve for x
   x = 19,541,244,100/63,360
6. Step 6: Final answer
   x = 308,416.10