Finding the Third Proportional to 51,822.50 and 139,449.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,822.50 : 139,449.50 = 139,449.50 : x
2. Step 2: Convert to fraction form
   51,822.50/139,449.50 = 139,449.50/x
3. Step 3: Cross multiply
   51,822.50x = 139,449.50 × 139,449.50
4. Step 4: Simplify right side
   51,822.50x = 19,446,163,050.25
5. Step 5: Solve for x
   x = 19,446,163,050.25/51,822.50
6. Step 6: Final answer
   x = 375,245.56