Finding the Third Proportional to 62,936 and 139,856

Step by Step Solution

1. Step 1: Write the proportion equation
   62,936 : 139,856 = 139,856 : x
2. Step 2: Convert to fraction form
   62,936/139,856 = 139,856/x
3. Step 3: Cross multiply
   62,936x = 139,856 × 139,856
4. Step 4: Simplify right side
   62,936x = 19,559,700,736
5. Step 5: Solve for x
   x = 19,559,700,736/62,936
6. Step 6: Final answer
   x = 310,787.16