Finding the Third Proportional to 65,218 and 142,938

Step by Step Solution

1. Step 1: Write the proportion equation
   65,218 : 142,938 = 142,938 : x
2. Step 2: Convert to fraction form
   65,218/142,938 = 142,938/x
3. Step 3: Cross multiply
   65,218x = 142,938 × 142,938
4. Step 4: Simplify right side
   65,218x = 20,431,271,844
5. Step 5: Solve for x
   x = 20,431,271,844/65,218
6. Step 6: Final answer
   x = 313,276.58