Finding the Third Proportional to 98,577 and 139,485

Step by Step Solution

1. Step 1: Write the proportion equation
   98,577 : 139,485 = 139,485 : x
2. Step 2: Convert to fraction form
   98,577/139,485 = 139,485/x
3. Step 3: Cross multiply
   98,577x = 139,485 × 139,485
4. Step 4: Simplify right side
   98,577x = 19,456,065,225
5. Step 5: Solve for x
   x = 19,456,065,225/98,577
6. Step 6: Final answer
   x = 197,369.22