Finding the Third Proportional to 2,139,440 and 4,698,808

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,440 : 4,698,808 = 4,698,808 : x
2. Step 2: Convert to fraction form
   2,139,440/4,698,808 = 4,698,808/x
3. Step 3: Cross multiply
   2,139,440x = 4,698,808 × 4,698,808
4. Step 4: Simplify right side
   2,139,440x = 22,078,796,620,864
5. Step 5: Solve for x
   x = 22,078,796,620,864/2,139,440
6. Step 6: Final answer
   x = 10,319,895.22