Finding the Third Proportional to 139,505,145 and 229,709,813

Step by Step Solution

1. Step 1: Write the proportion equation
   139,505,145 : 229,709,813 = 229,709,813 : x
2. Step 2: Convert to fraction form
   139,505,145/229,709,813 = 229,709,813/x
3. Step 3: Cross multiply
   139,505,145x = 229,709,813 × 229,709,813
4. Step 4: Simplify right side
   139,505,145x = 52,766,598,188,494,968
5. Step 5: Solve for x
   x = 52,766,598,188,494,968/139,505,145
6. Step 6: Final answer
   x = 378,241,233.96