Finding the Third Proportional to 191,388 and 273,960

Step by Step Solution

1. Step 1: Write the proportion equation
   191,388 : 273,960 = 273,960 : x
2. Step 2: Convert to fraction form
   191,388/273,960 = 273,960/x
3. Step 3: Cross multiply
   191,388x = 273,960 × 273,960
4. Step 4: Simplify right side
   191,388x = 75,054,081,600
5. Step 5: Solve for x
   x = 75,054,081,600/191,388
6. Step 6: Final answer
   x = 392,156.67