Finding the Third Proportional to 65,464 and 143,672

Step by Step Solution

1. Step 1: Write the proportion equation
   65,464 : 143,672 = 143,672 : x
2. Step 2: Convert to fraction form
   65,464/143,672 = 143,672/x
3. Step 3: Cross multiply
   65,464x = 143,672 × 143,672
4. Step 4: Simplify right side
   65,464x = 20,641,643,584
5. Step 5: Solve for x
   x = 20,641,643,584/65,464
6. Step 6: Final answer
   x = 315,312.90