Finding the Third Proportional to 88,950.75 and 139,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,950.75 : 139,258.50 = 139,258.50 : x
2. Step 2: Convert to fraction form
   88,950.75/139,258.50 = 139,258.50/x
3. Step 3: Cross multiply
   88,950.75x = 139,258.50 × 139,258.50
4. Step 4: Simplify right side
   88,950.75x = 19,392,929,822.25
5. Step 5: Solve for x
   x = 19,392,929,822.25/88,950.75
6. Step 6: Final answer
   x = 218,018.73