Finding the Third Proportional to 71,790 and 100,600

Step by Step Solution

1. Step 1: Write the proportion equation
   71,790 : 100,600 = 100,600 : x
2. Step 2: Convert to fraction form
   71,790/100,600 = 100,600/x
3. Step 3: Cross multiply
   71,790x = 100,600 × 100,600
4. Step 4: Simplify right side
   71,790x = 10,120,360,000
5. Step 5: Solve for x
   x = 10,120,360,000/71,790
6. Step 6: Final answer
   x = 140,971.72