Finding the Third Proportional to 68,018.50 and 105,580

Step by Step Solution

1. Step 1: Write the proportion equation
   68,018.50 : 105,580 = 105,580 : x
2. Step 2: Convert to fraction form
   68,018.50/105,580 = 105,580/x
3. Step 3: Cross multiply
   68,018.50x = 105,580 × 105,580
4. Step 4: Simplify right side
   68,018.50x = 11,147,136,400
5. Step 5: Solve for x
   x = 11,147,136,400/68,018.50
6. Step 6: Final answer
   x = 163,883.89