Finding the Third Proportional to 134,280 and 290,250

Step by Step Solution

1. Step 1: Write the proportion equation
   134,280 : 290,250 = 290,250 : x
2. Step 2: Convert to fraction form
   134,280/290,250 = 290,250/x
3. Step 3: Cross multiply
   134,280x = 290,250 × 290,250
4. Step 4: Simplify right side
   134,280x = 84,245,062,500
5. Step 5: Solve for x
   x = 84,245,062,500/134,280
6. Step 6: Final answer
   x = 627,383.55