Finding the Third Proportional to 139,136 and 186,396

Step by Step Solution

1. Step 1: Write the proportion equation
   139,136 : 186,396 = 186,396 : x
2. Step 2: Convert to fraction form
   139,136/186,396 = 186,396/x
3. Step 3: Cross multiply
   139,136x = 186,396 × 186,396
4. Step 4: Simplify right side
   139,136x = 34,743,468,816
5. Step 5: Solve for x
   x = 34,743,468,816/139,136
6. Step 6: Final answer
   x = 249,708.69