Finding the Third Proportional to 2,139,456 and 4,698,840

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,456 : 4,698,840 = 4,698,840 : x
2. Step 2: Convert to fraction form
   2,139,456/4,698,840 = 4,698,840/x
3. Step 3: Cross multiply
   2,139,456x = 4,698,840 × 4,698,840
4. Step 4: Simplify right side
   2,139,456x = 22,079,097,345,600
5. Step 5: Solve for x
   x = 22,079,097,345,600/2,139,456
6. Step 6: Final answer
   x = 10,319,958.60