Finding the Third Proportional to 45,509 and 67,912

Step by Step Solution

1. Step 1: Write the proportion equation
   45,509 : 67,912 = 67,912 : x
2. Step 2: Convert to fraction form
   45,509/67,912 = 67,912/x
3. Step 3: Cross multiply
   45,509x = 67,912 × 67,912
4. Step 4: Simplify right side
   45,509x = 4,612,039,744
5. Step 5: Solve for x
   x = 4,612,039,744/45,509
6. Step 6: Final answer
   x = 101,343.46