Finding the Third Proportional to 139,132 and 186,390

Step by Step Solution

1. Step 1: Write the proportion equation
   139,132 : 186,390 = 186,390 : x
2. Step 2: Convert to fraction form
   139,132/186,390 = 186,390/x
3. Step 3: Cross multiply
   139,132x = 186,390 × 186,390
4. Step 4: Simplify right side
   139,132x = 34,741,232,100
5. Step 5: Solve for x
   x = 34,741,232,100/139,132
6. Step 6: Final answer
   x = 249,699.80