Finding the Third Proportional to 69,426 and 154,980

Step by Step Solution

1. Step 1: Write the proportion equation
   69,426 : 154,980 = 154,980 : x
2. Step 2: Convert to fraction form
   69,426/154,980 = 154,980/x
3. Step 3: Cross multiply
   69,426x = 154,980 × 154,980
4. Step 4: Simplify right side
   69,426x = 24,018,800,400
5. Step 5: Solve for x
   x = 24,018,800,400/69,426
6. Step 6: Final answer
   x = 345,962.61