Finding the Third Proportional to 139,797.75 and 299,187

Step by Step Solution

1. Step 1: Write the proportion equation
   139,797.75 : 299,187 = 299,187 : x
2. Step 2: Convert to fraction form
   139,797.75/299,187 = 299,187/x
3. Step 3: Cross multiply
   139,797.75x = 299,187 × 299,187
4. Step 4: Simplify right side
   139,797.75x = 89,512,860,969
5. Step 5: Solve for x
   x = 89,512,860,969/139,797.75
6. Step 6: Final answer
   x = 640,302.59