Finding the Third Proportional to 139,512 and 301,380

Step by Step Solution

1. Step 1: Write the proportion equation
   139,512 : 301,380 = 301,380 : x
2. Step 2: Convert to fraction form
   139,512/301,380 = 301,380/x
3. Step 3: Cross multiply
   139,512x = 301,380 × 301,380
4. Step 4: Simplify right side
   139,512x = 90,829,904,400
5. Step 5: Solve for x
   x = 90,829,904,400/139,512
6. Step 6: Final answer
   x = 651,054.42