Finding the Third Proportional to 39,658.36 and 87,164.86

Step by Step Solution

1. Step 1: Write the proportion equation
   39,658.36 : 87,164.86 = 87,164.86 : x
2. Step 2: Convert to fraction form
   39,658.36/87,164.86 = 87,164.86/x
3. Step 3: Cross multiply
   39,658.36x = 87,164.86 × 87,164.86
4. Step 4: Simplify right side
   39,658.36x = 7,597,712,709.86
5. Step 5: Solve for x
   x = 7,597,712,709.86/39,658.36
6. Step 6: Final answer
   x = 191,579.10