Finding the Third Proportional to 104,828 and 139,665

Step by Step Solution

1. Step 1: Write the proportion equation
   104,828 : 139,665 = 139,665 : x
2. Step 2: Convert to fraction form
   104,828/139,665 = 139,665/x
3. Step 3: Cross multiply
   104,828x = 139,665 × 139,665
4. Step 4: Simplify right side
   104,828x = 19,506,312,225
5. Step 5: Solve for x
   x = 19,506,312,225/104,828
6. Step 6: Final answer
   x = 186,079.22