Finding the Third Proportional to 142,819.50 and 333,779.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,819.50 : 333,779.25 = 333,779.25 : x
2. Step 2: Convert to fraction form
   142,819.50/333,779.25 = 333,779.25/x
3. Step 3: Cross multiply
   142,819.50x = 333,779.25 × 333,779.25
4. Step 4: Simplify right side
   142,819.50x = 111,408,587,730.56
5. Step 5: Solve for x
   x = 111,408,587,730.56/142,819.50
6. Step 6: Final answer
   x = 780,065.66