Finding the Third Proportional to 68,298 and 148,260

Step by Step Solution

1. Step 1: Write the proportion equation
   68,298 : 148,260 = 148,260 : x
2. Step 2: Convert to fraction form
   68,298/148,260 = 148,260/x
3. Step 3: Cross multiply
   68,298x = 148,260 × 148,260
4. Step 4: Simplify right side
   68,298x = 21,981,027,600
5. Step 5: Solve for x
   x = 21,981,027,600/68,298
6. Step 6: Final answer
   x = 321,839.99