Finding the Third Proportional to 89,819 and 149,690

Step by Step Solution

1. Step 1: Write the proportion equation
   89,819 : 149,690 = 149,690 : x
2. Step 2: Convert to fraction form
   89,819/149,690 = 149,690/x
3. Step 3: Cross multiply
   89,819x = 149,690 × 149,690
4. Step 4: Simplify right side
   89,819x = 22,407,096,100
5. Step 5: Solve for x
   x = 22,407,096,100/89,819
6. Step 6: Final answer
   x = 249,469.45