Finding the Third Proportional to 88,612 and 137,372

Step by Step Solution

1. Step 1: Write the proportion equation
   88,612 : 137,372 = 137,372 : x
2. Step 2: Convert to fraction form
   88,612/137,372 = 137,372/x
3. Step 3: Cross multiply
   88,612x = 137,372 × 137,372
4. Step 4: Simplify right side
   88,612x = 18,871,066,384
5. Step 5: Solve for x
   x = 18,871,066,384/88,612
6. Step 6: Final answer
   x = 212,962.88