Finding the Third Proportional to 139,995 and 189,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,995 : 189,256.50 = 189,256.50 : x
2. Step 2: Convert to fraction form
   139,995/189,256.50 = 189,256.50/x
3. Step 3: Cross multiply
   139,995x = 189,256.50 × 189,256.50
4. Step 4: Simplify right side
   139,995x = 35,818,022,792.25
5. Step 5: Solve for x
   x = 35,818,022,792.25/139,995
6. Step 6: Final answer
   x = 255,852.16