Finding the Third Proportional to 142,879.50 and 307,265

Step by Step Solution

1. Step 1: Write the proportion equation
   142,879.50 : 307,265 = 307,265 : x
2. Step 2: Convert to fraction form
   142,879.50/307,265 = 307,265/x
3. Step 3: Cross multiply
   142,879.50x = 307,265 × 307,265
4. Step 4: Simplify right side
   142,879.50x = 94,411,780,225
5. Step 5: Solve for x
   x = 94,411,780,225/142,879.50
6. Step 6: Final answer
   x = 660,779.05