Finding the Third Proportional to 2,155,376 and 3,138,288

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,376 : 3,138,288 = 3,138,288 : x
2. Step 2: Convert to fraction form
   2,155,376/3,138,288 = 3,138,288/x
3. Step 3: Cross multiply
   2,155,376x = 3,138,288 × 3,138,288
4. Step 4: Simplify right side
   2,155,376x = 9,848,851,570,944
5. Step 5: Solve for x
   x = 9,848,851,570,944/2,155,376
6. Step 6: Final answer
   x = 4,569,435.48