Finding the Third Proportional to 1,009,042 and 2,155,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,042 : 2,155,172 = 2,155,172 : x
2. Step 2: Convert to fraction form
   1,009,042/2,155,172 = 2,155,172/x
3. Step 3: Cross multiply
   1,009,042x = 2,155,172 × 2,155,172
4. Step 4: Simplify right side
   1,009,042x = 4,644,766,349,584
5. Step 5: Solve for x
   x = 4,644,766,349,584/1,009,042
6. Step 6: Final answer
   x = 4,603,144.72