Finding the Third Proportional to 89,916.75 and 188,443.13

Step by Step Solution

1. Step 1: Write the proportion equation
   89,916.75 : 188,443.13 = 188,443.13 : x
2. Step 2: Convert to fraction form
   89,916.75/188,443.13 = 188,443.13/x
3. Step 3: Cross multiply
   89,916.75x = 188,443.13 × 188,443.13
4. Step 4: Simplify right side
   89,916.75x = 35,510,811,359.77
5. Step 5: Solve for x
   x = 35,510,811,359.77/89,916.75
6. Step 6: Final answer
   x = 394,929.88