Finding the Third Proportional to 68,294 and 139,298

Step by Step Solution

1. Step 1: Write the proportion equation
   68,294 : 139,298 = 139,298 : x
2. Step 2: Convert to fraction form
   68,294/139,298 = 139,298/x
3. Step 3: Cross multiply
   68,294x = 139,298 × 139,298
4. Step 4: Simplify right side
   68,294x = 19,403,932,804
5. Step 5: Solve for x
   x = 19,403,932,804/68,294
6. Step 6: Final answer
   x = 284,123.54