Finding the Third Proportional to 142,110,549.50 and 309,245,005

Step by Step Solution

1. Step 1: Write the proportion equation
   142,110,549.50 : 309,245,005 = 309,245,005 : x
2. Step 2: Convert to fraction form
   142,110,549.50/309,245,005 = 309,245,005/x
3. Step 3: Cross multiply
   142,110,549.50x = 309,245,005 × 309,245,005
4. Step 4: Simplify right side
   142,110,549.50x = 95,632,473,117,450,032
5. Step 5: Solve for x
   x = 95,632,473,117,450,032/142,110,549.50
6. Step 6: Final answer
   x = 672,944,221.62