Finding the Third Proportional to 64,383 and 142,590

Step by Step Solution

1. Step 1: Write the proportion equation
   64,383 : 142,590 = 142,590 : x
2. Step 2: Convert to fraction form
   64,383/142,590 = 142,590/x
3. Step 3: Cross multiply
   64,383x = 142,590 × 142,590
4. Step 4: Simplify right side
   64,383x = 20,331,908,100
5. Step 5: Solve for x
   x = 20,331,908,100/64,383
6. Step 6: Final answer
   x = 315,796.22