Finding the Third Proportional to 70,648 and 99,020

Step by Step Solution

1. Step 1: Write the proportion equation
   70,648 : 99,020 = 99,020 : x
2. Step 2: Convert to fraction form
   70,648/99,020 = 99,020/x
3. Step 3: Cross multiply
   70,648x = 99,020 × 99,020
4. Step 4: Simplify right side
   70,648x = 9,804,960,400
5. Step 5: Solve for x
   x = 9,804,960,400/70,648
6. Step 6: Final answer
   x = 138,786.10