Finding the Third Proportional to 2,212,818 and 4,506,788

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212,818 : 4,506,788 = 4,506,788 : x
2. Step 2: Convert to fraction form
   2,212,818/4,506,788 = 4,506,788/x
3. Step 3: Cross multiply
   2,212,818x = 4,506,788 × 4,506,788
4. Step 4: Simplify right side
   2,212,818x = 20,311,138,076,944
5. Step 5: Solve for x
   x = 20,311,138,076,944/2,212,818
6. Step 6: Final answer
   x = 9,178,856.14