Finding the Third Proportional to 67,020 and 81,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,020 : 81,469.50 = 81,469.50 : x
2. Step 2: Convert to fraction form
   67,020/81,469.50 = 81,469.50/x
3. Step 3: Cross multiply
   67,020x = 81,469.50 × 81,469.50
4. Step 4: Simplify right side
   67,020x = 6,637,279,430.25
5. Step 5: Solve for x
   x = 6,637,279,430.25/67,020
6. Step 6: Final answer
   x = 99,034.31