Finding the Third Proportional to 139,505,130 and 229,709,790

Step by Step Solution

1. Step 1: Write the proportion equation
   139,505,130 : 229,709,790 = 229,709,790 : x
2. Step 2: Convert to fraction form
   139,505,130/229,709,790 = 229,709,790/x
3. Step 3: Cross multiply
   139,505,130x = 229,709,790 × 229,709,790
4. Step 4: Simplify right side
   139,505,130x = 52,766,587,621,844,096
5. Step 5: Solve for x
   x = 52,766,587,621,844,096/139,505,130
6. Step 6: Final answer
   x = 378,241,198.89