Finding the Third Proportional to 2,198,052 and 4,686,440

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198,052 : 4,686,440 = 4,686,440 : x
2. Step 2: Convert to fraction form
   2,198,052/4,686,440 = 4,686,440/x
3. Step 3: Cross multiply
   2,198,052x = 4,686,440 × 4,686,440
4. Step 4: Simplify right side
   2,198,052x = 21,962,719,873,600
5. Step 5: Solve for x
   x = 21,962,719,873,600/2,198,052
6. Step 6: Final answer
   x = 9,991,901.86