Finding the Third Proportional to 67,451 and 98,990

Step by Step Solution

1. Step 1: Write the proportion equation
   67,451 : 98,990 = 98,990 : x
2. Step 2: Convert to fraction form
   67,451/98,990 = 98,990/x
3. Step 3: Cross multiply
   67,451x = 98,990 × 98,990
4. Step 4: Simplify right side
   67,451x = 9,799,020,100
5. Step 5: Solve for x
   x = 9,799,020,100/67,451
6. Step 6: Final answer
   x = 145,276.13