Finding the Third Proportional to 2,218,407 and 4,773,072

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,407 : 4,773,072 = 4,773,072 : x
2. Step 2: Convert to fraction form
   2,218,407/4,773,072 = 4,773,072/x
3. Step 3: Cross multiply
   2,218,407x = 4,773,072 × 4,773,072
4. Step 4: Simplify right side
   2,218,407x = 22,782,216,317,184
5. Step 5: Solve for x
   x = 22,782,216,317,184/2,218,407
6. Step 6: Final answer
   x = 10,269,628.75