Finding the Third Proportional to 140,953.50 and 218,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,953.50 : 218,155.50 = 218,155.50 : x
2. Step 2: Convert to fraction form
   140,953.50/218,155.50 = 218,155.50/x
3. Step 3: Cross multiply
   140,953.50x = 218,155.50 × 218,155.50
4. Step 4: Simplify right side
   140,953.50x = 47,591,822,180.25
5. Step 5: Solve for x
   x = 47,591,822,180.25/140,953.50
6. Step 6: Final answer
   x = 337,642.00