Finding the Third Proportional to 36,563.91 and 78,139.69

Step by Step Solution

1. Step 1: Write the proportion equation
   36,563.91 : 78,139.69 = 78,139.69 : x
2. Step 2: Convert to fraction form
   36,563.91/78,139.69 = 78,139.69/x
3. Step 3: Cross multiply
   36,563.91x = 78,139.69 × 78,139.69
4. Step 4: Simplify right side
   36,563.91x = 6,105,810,762.60
5. Step 5: Solve for x
   x = 6,105,810,762.60/36,563.91
6. Step 6: Final answer
   x = 166,990.11