Finding the Third Proportional to 47,931.75 and 76,681.69

Step by Step Solution

1. Step 1: Write the proportion equation
   47,931.75 : 76,681.69 = 76,681.69 : x
2. Step 2: Convert to fraction form
   47,931.75/76,681.69 = 76,681.69/x
3. Step 3: Cross multiply
   47,931.75x = 76,681.69 × 76,681.69
4. Step 4: Simplify right side
   47,931.75x = 5,880,081,197.85
5. Step 5: Solve for x
   x = 5,880,081,197.85/47,931.75
6. Step 6: Final answer
   x = 122,676.12