Finding the Third Proportional to 35,868.50 and 70,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   35,868.50 : 70,818.50 = 70,818.50 : x
2. Step 2: Convert to fraction form
   35,868.50/70,818.50 = 70,818.50/x
3. Step 3: Cross multiply
   35,868.50x = 70,818.50 × 70,818.50
4. Step 4: Simplify right side
   35,868.50x = 5,015,259,942.25
5. Step 5: Solve for x
   x = 5,015,259,942.25/35,868.50
6. Step 6: Final answer
   x = 139,823.52