Finding the Third Proportional to 2,586,218 and 5,620,090

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,218 : 5,620,090 = 5,620,090 : x
2. Step 2: Convert to fraction form
   2,586,218/5,620,090 = 5,620,090/x
3. Step 3: Cross multiply
   2,586,218x = 5,620,090 × 5,620,090
4. Step 4: Simplify right side
   2,586,218x = 31,585,411,608,100
5. Step 5: Solve for x
   x = 31,585,411,608,100/2,586,218
6. Step 6: Final answer
   x = 12,212,973.39