Finding the Third Proportional to 72,668 and 100,072

Step by Step Solution

1. Step 1: Write the proportion equation
   72,668 : 100,072 = 100,072 : x
2. Step 2: Convert to fraction form
   72,668/100,072 = 100,072/x
3. Step 3: Cross multiply
   72,668x = 100,072 × 100,072
4. Step 4: Simplify right side
   72,668x = 10,014,405,184
5. Step 5: Solve for x
   x = 10,014,405,184/72,668
6. Step 6: Final answer
   x = 137,810.39