Finding the Third Proportional to 67,812 and 98,640

Step by Step Solution

1. Step 1: Write the proportion equation
   67,812 : 98,640 = 98,640 : x
2. Step 2: Convert to fraction form
   67,812/98,640 = 98,640/x
3. Step 3: Cross multiply
   67,812x = 98,640 × 98,640
4. Step 4: Simplify right side
   67,812x = 9,729,849,600
5. Step 5: Solve for x
   x = 9,729,849,600/67,812
6. Step 6: Final answer
   x = 143,482.71