Finding the Third Proportional to 70,800.75 and 98,990.44

Step by Step Solution

1. Step 1: Write the proportion equation
   70,800.75 : 98,990.44 = 98,990.44 : x
2. Step 2: Convert to fraction form
   70,800.75/98,990.44 = 98,990.44/x
3. Step 3: Cross multiply
   70,800.75x = 98,990.44 × 98,990.44
4. Step 4: Simplify right side
   70,800.75x = 9,799,106,716.44
5. Step 5: Solve for x
   x = 9,799,106,716.44/70,800.75
6. Step 6: Final answer
   x = 138,404.00