Finding the Third Proportional to 139,320 and 203,148

Step by Step Solution

1. Step 1: Write the proportion equation
   139,320 : 203,148 = 203,148 : x
2. Step 2: Convert to fraction form
   139,320/203,148 = 203,148/x
3. Step 3: Cross multiply
   139,320x = 203,148 × 203,148
4. Step 4: Simplify right side
   139,320x = 41,269,109,904
5. Step 5: Solve for x
   x = 41,269,109,904/139,320
6. Step 6: Final answer
   x = 296,218.13