Finding the Third Proportional to 2,128,365 and 4,729,122

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,365 : 4,729,122 = 4,729,122 : x
2. Step 2: Convert to fraction form
   2,128,365/4,729,122 = 4,729,122/x
3. Step 3: Cross multiply
   2,128,365x = 4,729,122 × 4,729,122
4. Step 4: Simplify right side
   2,128,365x = 22,364,594,890,884
5. Step 5: Solve for x
   x = 22,364,594,890,884/2,128,365
6. Step 6: Final answer
   x = 10,507,875.71