Finding the Third Proportional to 419,415,396 and 629,123,174

Step by Step Solution

1. Step 1: Write the proportion equation
   419,415,396 : 629,123,174 = 629,123,174 : x
2. Step 2: Convert to fraction form
   419,415,396/629,123,174 = 629,123,174/x
3. Step 3: Cross multiply
   419,415,396x = 629,123,174 × 629,123,174
4. Step 4: Simplify right side
   419,415,396x = 395,795,968,063,834,304
5. Step 5: Solve for x
   x = 395,795,968,063,834,304/419,415,396
6. Step 6: Final answer
   x = 943,684,881.00