Finding the Third Proportional to 98,648 and 139,585

Step by Step Solution

1. Step 1: Write the proportion equation
   98,648 : 139,585 = 139,585 : x
2. Step 2: Convert to fraction form
   98,648/139,585 = 139,585/x
3. Step 3: Cross multiply
   98,648x = 139,585 × 139,585
4. Step 4: Simplify right side
   98,648x = 19,483,972,225
5. Step 5: Solve for x
   x = 19,483,972,225/98,648
6. Step 6: Final answer
   x = 197,510.06