Finding the Third Proportional to 2,220,680 and 4,615,820

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220,680 : 4,615,820 = 4,615,820 : x
2. Step 2: Convert to fraction form
   2,220,680/4,615,820 = 4,615,820/x
3. Step 3: Cross multiply
   2,220,680x = 4,615,820 × 4,615,820
4. Step 4: Simplify right side
   2,220,680x = 21,305,794,272,400
5. Step 5: Solve for x
   x = 21,305,794,272,400/2,220,680
6. Step 6: Final answer
   x = 9,594,265.84