Finding the Third Proportional to 70.17 and 100.20

Step by Step Solution

1. Step 1: Write the proportion equation
   70.17 : 100.20 = 100.20 : x
2. Step 2: Convert to fraction form
   70.17/100.20 = 100.20/x
3. Step 3: Cross multiply
   70.17x = 100.20 × 100.20
4. Step 4: Simplify right side
   70.17x = 10,039.10
5. Step 5: Solve for x
   x = 10,039.10/70.17
6. Step 6: Final answer
   x = 143.06