Finding the Third Proportional to 2,155,490 and 3,138,464

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,490 : 3,138,464 = 3,138,464 : x
2. Step 2: Convert to fraction form
   2,155,490/3,138,464 = 3,138,464/x
3. Step 3: Cross multiply
   2,155,490x = 3,138,464 × 3,138,464
4. Step 4: Simplify right side
   2,155,490x = 9,849,956,279,296
5. Step 5: Solve for x
   x = 9,849,956,279,296/2,155,490
6. Step 6: Final answer
   x = 4,569,706.32