Finding the Third Proportional to 72,008 and 105,580

Step by Step Solution

1. Step 1: Write the proportion equation
   72,008 : 105,580 = 105,580 : x
2. Step 2: Convert to fraction form
   72,008/105,580 = 105,580/x
3. Step 3: Cross multiply
   72,008x = 105,580 × 105,580
4. Step 4: Simplify right side
   72,008x = 11,147,136,400
5. Step 5: Solve for x
   x = 11,147,136,400/72,008
6. Step 6: Final answer
   x = 154,804.14