Finding the Third Proportional to 418,379,508 and 912,090,870

Step by Step Solution

1. Step 1: Write the proportion equation
   418,379,508 : 912,090,870 = 912,090,870 : x
2. Step 2: Convert to fraction form
   418,379,508/912,090,870 = 912,090,870/x
3. Step 3: Cross multiply
   418,379,508x = 912,090,870 × 912,090,870
4. Step 4: Simplify right side
   418,379,508x = 831,909,755,137,356,928
5. Step 5: Solve for x
   x = 831,909,755,137,356,928/418,379,508
6. Step 6: Final answer
   x = 1,988,409,420.71