Finding the Third Proportional to 65,140.50 and 142,750.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,140.50 : 142,750.50 = 142,750.50 : x
2. Step 2: Convert to fraction form
   65,140.50/142,750.50 = 142,750.50/x
3. Step 3: Cross multiply
   65,140.50x = 142,750.50 × 142,750.50
4. Step 4: Simplify right side
   65,140.50x = 20,377,705,250.25
5. Step 5: Solve for x
   x = 20,377,705,250.25/65,140.50
6. Step 6: Final answer
   x = 312,826.97