Finding the Third Proportional to 63,241 and 139,878

Step by Step Solution

1. Step 1: Write the proportion equation
   63,241 : 139,878 = 139,878 : x
2. Step 2: Convert to fraction form
   63,241/139,878 = 139,878/x
3. Step 3: Cross multiply
   63,241x = 139,878 × 139,878
4. Step 4: Simplify right side
   63,241x = 19,565,854,884
5. Step 5: Solve for x
   x = 19,565,854,884/63,241
6. Step 6: Final answer
   x = 309,385.60