Finding the Third Proportional to 63,238.50 and 139,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,238.50 : 139,873.50 = 139,873.50 : x
2. Step 2: Convert to fraction form
   63,238.50/139,873.50 = 139,873.50/x
3. Step 3: Cross multiply
   63,238.50x = 139,873.50 × 139,873.50
4. Step 4: Simplify right side
   63,238.50x = 19,564,596,002.25
5. Step 5: Solve for x
   x = 19,564,596,002.25/63,238.50
6. Step 6: Final answer
   x = 309,377.93