Finding the Third Proportional to 58,665.38 and 128,084.63

Step by Step Solution

1. Step 1: Write the proportion equation
   58,665.38 : 128,084.63 = 128,084.63 : x
2. Step 2: Convert to fraction form
   58,665.38/128,084.63 = 128,084.63/x
3. Step 3: Cross multiply
   58,665.38x = 128,084.63 × 128,084.63
4. Step 4: Simplify right side
   58,665.38x = 16,405,671,161.39
5. Step 5: Solve for x
   x = 16,405,671,161.39/58,665.38
6. Step 6: Final answer
   x = 279,648.28