Finding the Third Proportional to 65,160.56 and 142,776

Step by Step Solution

1. Step 1: Write the proportion equation
   65,160.56 : 142,776 = 142,776 : x
2. Step 2: Convert to fraction form
   65,160.56/142,776 = 142,776/x
3. Step 3: Cross multiply
   65,160.56x = 142,776 × 142,776
4. Step 4: Simplify right side
   65,160.56x = 20,384,986,176
5. Step 5: Solve for x
   x = 20,384,986,176/65,160.56
6. Step 6: Final answer
   x = 312,842.39