Finding the Third Proportional to 73,890 and 111,611

Step by Step Solution

1. Step 1: Write the proportion equation
   73,890 : 111,611 = 111,611 : x
2. Step 2: Convert to fraction form
   73,890/111,611 = 111,611/x
3. Step 3: Cross multiply
   73,890x = 111,611 × 111,611
4. Step 4: Simplify right side
   73,890x = 12,457,015,321
5. Step 5: Solve for x
   x = 12,457,015,321/73,890
6. Step 6: Final answer
   x = 168,588.65