Finding the Third Proportional to 85,673.25 and 128,007

Step by Step Solution

1. Step 1: Write the proportion equation
   85,673.25 : 128,007 = 128,007 : x
2. Step 2: Convert to fraction form
   85,673.25/128,007 = 128,007/x
3. Step 3: Cross multiply
   85,673.25x = 128,007 × 128,007
4. Step 4: Simplify right side
   85,673.25x = 16,385,792,049
5. Step 5: Solve for x
   x = 16,385,792,049/85,673.25
6. Step 6: Final answer
   x = 191,259.14