Finding the Third Proportional to 6,418,994,661 and 13,977,550,269

Step by Step Solution

1. Step 1: Write the proportion equation
   6,418,994,661 : 13,977,550,269 = 13,977,550,269 : x
2. Step 2: Convert to fraction form
   6,418,994,661/13,977,550,269 = 13,977,550,269/x
3. Step 3: Cross multiply
   6,418,994,661x = 13,977,550,269 × 13,977,550,269
4. Step 4: Simplify right side
   6,418,994,661x = 195,371,911,522,421,964,800
5. Step 5: Solve for x
   x = 195,371,911,522,421,964,800/6,418,994,661
6. Step 6: Final answer
   x = 30,436,528,123.24