Finding the Third Proportional to 39,403.69 and 85,505.34

Step by Step Solution

1. Step 1: Write the proportion equation
   39,403.69 : 85,505.34 = 85,505.34 : x
2. Step 2: Convert to fraction form
   39,403.69/85,505.34 = 85,505.34/x
3. Step 3: Cross multiply
   39,403.69x = 85,505.34 × 85,505.34
4. Step 4: Simplify right side
   39,403.69x = 7,311,163,809.81
5. Step 5: Solve for x
   x = 7,311,163,809.81/39,403.69
6. Step 6: Final answer
   x = 185,545.17