Finding the Third Proportional to 2,138,920 and 2,905,632

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,920 : 2,905,632 = 2,905,632 : x
2. Step 2: Convert to fraction form
   2,138,920/2,905,632 = 2,905,632/x
3. Step 3: Cross multiply
   2,138,920x = 2,905,632 × 2,905,632
4. Step 4: Simplify right side
   2,138,920x = 8,442,697,319,424
5. Step 5: Solve for x
   x = 8,442,697,319,424/2,138,920
6. Step 6: Final answer
   x = 3,947,177.70