Finding the Third Proportional to 30,795.50 and 66,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,795.50 : 66,398.50 = 66,398.50 : x
2. Step 2: Convert to fraction form
   30,795.50/66,398.50 = 66,398.50/x
3. Step 3: Cross multiply
   30,795.50x = 66,398.50 × 66,398.50
4. Step 4: Simplify right side
   30,795.50x = 4,408,760,802.25
5. Step 5: Solve for x
   x = 4,408,760,802.25/30,795.50
6. Step 6: Final answer
   x = 143,162.50