Finding the Third Proportional to 62,920 and 139,826

Step by Step Solution

1. Step 1: Write the proportion equation
   62,920 : 139,826 = 139,826 : x
2. Step 2: Convert to fraction form
   62,920/139,826 = 139,826/x
3. Step 3: Cross multiply
   62,920x = 139,826 × 139,826
4. Step 4: Simplify right side
   62,920x = 19,551,310,276
5. Step 5: Solve for x
   x = 19,551,310,276/62,920
6. Step 6: Final answer
   x = 310,732.84