Finding the Third Proportional to 42,700 and 91,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,700 : 91,717.50 = 91,717.50 : x
2. Step 2: Convert to fraction form
   42,700/91,717.50 = 91,717.50/x
3. Step 3: Cross multiply
   42,700x = 91,717.50 × 91,717.50
4. Step 4: Simplify right side
   42,700x = 8,412,099,806.25
5. Step 5: Solve for x
   x = 8,412,099,806.25/42,700
6. Step 6: Final answer
   x = 197,004.68