Finding the Third Proportional to 64,679 and 141,383

Step by Step Solution

1. Step 1: Write the proportion equation
   64,679 : 141,383 = 141,383 : x
2. Step 2: Convert to fraction form
   64,679/141,383 = 141,383/x
3. Step 3: Cross multiply
   64,679x = 141,383 × 141,383
4. Step 4: Simplify right side
   64,679x = 19,989,152,689
5. Step 5: Solve for x
   x = 19,989,152,689/64,679
6. Step 6: Final answer
   x = 309,051.67