Finding the Third Proportional to 83,145.94 and 128,459.06

Step by Step Solution

1. Step 1: Write the proportion equation
   83,145.94 : 128,459.06 = 128,459.06 : x
2. Step 2: Convert to fraction form
   83,145.94/128,459.06 = 128,459.06/x
3. Step 3: Cross multiply
   83,145.94x = 128,459.06 × 128,459.06
4. Step 4: Simplify right side
   83,145.94x = 16,501,730,738.38
5. Step 5: Solve for x
   x = 16,501,730,738.38/83,145.94
6. Step 6: Final answer
   x = 198,467.07