Finding the Third Proportional to 89,573 and 139,806

Step by Step Solution

1. Step 1: Write the proportion equation
   89,573 : 139,806 = 139,806 : x
2. Step 2: Convert to fraction form
   89,573/139,806 = 139,806/x
3. Step 3: Cross multiply
   89,573x = 139,806 × 139,806
4. Step 4: Simplify right side
   89,573x = 19,545,717,636
5. Step 5: Solve for x
   x = 19,545,717,636/89,573
6. Step 6: Final answer
   x = 218,209.93