Finding the Third Proportional to 65,321.44 and 142,534.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65,321.44 : 142,534.69 = 142,534.69 : x
2. Step 2: Convert to fraction form
   65,321.44/142,534.69 = 142,534.69/x
3. Step 3: Cross multiply
   65,321.44x = 142,534.69 × 142,534.69
4. Step 4: Simplify right side
   65,321.44x = 20,316,137,140.72
5. Step 5: Solve for x
   x = 20,316,137,140.72/65,321.44
6. Step 6: Final answer
   x = 311,017.91