Finding the Third Proportional to 2,891,037,542 and 3,900,688,392

Step by Step Solution

1. Step 1: Write the proportion equation
   2,891,037,542 : 3,900,688,392 = 3,900,688,392 : x
2. Step 2: Convert to fraction form
   2,891,037,542/3,900,688,392 = 3,900,688,392/x
3. Step 3: Cross multiply
   2,891,037,542x = 3,900,688,392 × 3,900,688,392
4. Step 4: Simplify right side
   2,891,037,542x = 15,215,369,931,483,545,600
5. Step 5: Solve for x
   x = 15,215,369,931,483,545,600/2,891,037,542
6. Step 6: Final answer
   x = 5,262,944,431.00