Finding the Third Proportional to 67,519 and 145,426

Step by Step Solution

1. Step 1: Write the proportion equation
   67,519 : 145,426 = 145,426 : x
2. Step 2: Convert to fraction form
   67,519/145,426 = 145,426/x
3. Step 3: Cross multiply
   67,519x = 145,426 × 145,426
4. Step 4: Simplify right side
   67,519x = 21,148,721,476
5. Step 5: Solve for x
   x = 21,148,721,476/67,519
6. Step 6: Final answer
   x = 313,226.22