Finding the Third Proportional to 69,128 and 103,666

Step by Step Solution

1. Step 1: Write the proportion equation
   69,128 : 103,666 = 103,666 : x
2. Step 2: Convert to fraction form
   69,128/103,666 = 103,666/x
3. Step 3: Cross multiply
   69,128x = 103,666 × 103,666
4. Step 4: Simplify right side
   69,128x = 10,746,639,556
5. Step 5: Solve for x
   x = 10,746,639,556/69,128
6. Step 6: Final answer
   x = 155,460.01