Finding the Third Proportional to 1,224,978,426 and 2,688,041,772

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,978,426 : 2,688,041,772 = 2,688,041,772 : x
2. Step 2: Convert to fraction form
   1,224,978,426/2,688,041,772 = 2,688,041,772/x
3. Step 3: Cross multiply
   1,224,978,426x = 2,688,041,772 × 2,688,041,772
4. Step 4: Simplify right side
   1,224,978,426x = 7,225,568,568,016,900,096
5. Step 5: Solve for x
   x = 7,225,568,568,016,900,096/1,224,978,426
6. Step 6: Final answer
   x = 5,898,527,202.32