Finding the Third Proportional to 2,166,920 and 4,666,840

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166,920 : 4,666,840 = 4,666,840 : x
2. Step 2: Convert to fraction form
   2,166,920/4,666,840 = 4,666,840/x
3. Step 3: Cross multiply
   2,166,920x = 4,666,840 × 4,666,840
4. Step 4: Simplify right side
   2,166,920x = 21,779,395,585,600
5. Step 5: Solve for x
   x = 21,779,395,585,600/2,166,920
6. Step 6: Final answer
   x = 10,050,853.56