Finding the Third Proportional to 646,632 and 1,405,184

Step by Step Solution

1. Step 1: Write the proportion equation
   646,632 : 1,405,184 = 1,405,184 : x
2. Step 2: Convert to fraction form
   646,632/1,405,184 = 1,405,184/x
3. Step 3: Cross multiply
   646,632x = 1,405,184 × 1,405,184
4. Step 4: Simplify right side
   646,632x = 1,974,542,073,856
5. Step 5: Solve for x
   x = 1,974,542,073,856/646,632
6. Step 6: Final answer
   x = 3,053,579.28