Finding the Third Proportional to 2,155,396 and 3,138,323

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,396 : 3,138,323 = 3,138,323 : x
2. Step 2: Convert to fraction form
   2,155,396/3,138,323 = 3,138,323/x
3. Step 3: Cross multiply
   2,155,396x = 3,138,323 × 3,138,323
4. Step 4: Simplify right side
   2,155,396x = 9,849,071,252,329
5. Step 5: Solve for x
   x = 9,849,071,252,329/2,155,396
6. Step 6: Final answer
   x = 4,569,495.00