Finding the Third Proportional to 20,120.91 and 42,842.67

Step by Step Solution

1. Step 1: Write the proportion equation
   20,120.91 : 42,842.67 = 42,842.67 : x
2. Step 2: Convert to fraction form
   20,120.91/42,842.67 = 42,842.67/x
3. Step 3: Cross multiply
   20,120.91x = 42,842.67 × 42,842.67
4. Step 4: Simplify right side
   20,120.91x = 1,835,494,533.39
5. Step 5: Solve for x
   x = 1,835,494,533.39/20,120.91
6. Step 6: Final answer
   x = 91,223.25