Finding the Third Proportional to 58,145.53 and 128,076.56

Step by Step Solution

1. Step 1: Write the proportion equation
   58,145.53 : 128,076.56 = 128,076.56 : x
2. Step 2: Convert to fraction form
   58,145.53/128,076.56 = 128,076.56/x
3. Step 3: Cross multiply
   58,145.53x = 128,076.56 × 128,076.56
4. Step 4: Simplify right side
   58,145.53x = 16,403,605,861.82
5. Step 5: Solve for x
   x = 16,403,605,861.82/58,145.53
6. Step 6: Final answer
   x = 282,112.92