Finding the Third Proportional to 63,788 and 139,231

Step by Step Solution

1. Step 1: Write the proportion equation
   63,788 : 139,231 = 139,231 : x
2. Step 2: Convert to fraction form
   63,788/139,231 = 139,231/x
3. Step 3: Cross multiply
   63,788x = 139,231 × 139,231
4. Step 4: Simplify right side
   63,788x = 19,385,271,361
5. Step 5: Solve for x
   x = 19,385,271,361/63,788
6. Step 6: Final answer
   x = 303,901.54