Finding the Third Proportional to 89,148.38 and 138,483.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,148.38 : 138,483.56 = 138,483.56 : x
2. Step 2: Convert to fraction form
   89,148.38/138,483.56 = 138,483.56/x
3. Step 3: Cross multiply
   89,148.38x = 138,483.56 × 138,483.56
4. Step 4: Simplify right side
   89,148.38x = 19,177,697,082.69
5. Step 5: Solve for x
   x = 19,177,697,082.69/89,148.38
6. Step 6: Final answer
   x = 215,121.11