Finding the Third Proportional to 104,376 and 139,830

Step by Step Solution

1. Step 1: Write the proportion equation
   104,376 : 139,830 = 139,830 : x
2. Step 2: Convert to fraction form
   104,376/139,830 = 139,830/x
3. Step 3: Cross multiply
   104,376x = 139,830 × 139,830
4. Step 4: Simplify right side
   104,376x = 19,552,428,900
5. Step 5: Solve for x
   x = 19,552,428,900/104,376
6. Step 6: Final answer
   x = 187,326.87