Finding the Third Proportional to 139,380 and 187,281

Step by Step Solution

1. Step 1: Write the proportion equation
   139,380 : 187,281 = 187,281 : x
2. Step 2: Convert to fraction form
   139,380/187,281 = 187,281/x
3. Step 3: Cross multiply
   139,380x = 187,281 × 187,281
4. Step 4: Simplify right side
   139,380x = 35,074,172,961
5. Step 5: Solve for x
   x = 35,074,172,961/139,380
6. Step 6: Final answer
   x = 251,644.23