Finding the Third Proportional to 139,168 and 186,440

Step by Step Solution

1. Step 1: Write the proportion equation
   139,168 : 186,440 = 186,440 : x
2. Step 2: Convert to fraction form
   139,168/186,440 = 186,440/x
3. Step 3: Cross multiply
   139,168x = 186,440 × 186,440
4. Step 4: Simplify right side
   139,168x = 34,759,873,600
5. Step 5: Solve for x
   x = 34,759,873,600/139,168
6. Step 6: Final answer
   x = 249,769.15