Finding the Third Proportional to 2,137,120 and 4,361,442

Step by Step Solution

1. Step 1: Write the proportion equation
   2,137,120 : 4,361,442 = 4,361,442 : x
2. Step 2: Convert to fraction form
   2,137,120/4,361,442 = 4,361,442/x
3. Step 3: Cross multiply
   2,137,120x = 4,361,442 × 4,361,442
4. Step 4: Simplify right side
   2,137,120x = 19,022,176,319,364
5. Step 5: Solve for x
   x = 19,022,176,319,364/2,137,120
6. Step 6: Final answer
   x = 8,900,846.15