Finding the Third Proportional to 1,056,590 and 1,605,090

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056,590 : 1,605,090 = 1,605,090 : x
2. Step 2: Convert to fraction form
   1,056,590/1,605,090 = 1,605,090/x
3. Step 3: Cross multiply
   1,056,590x = 1,605,090 × 1,605,090
4. Step 4: Simplify right side
   1,056,590x = 2,576,313,908,100
5. Step 5: Solve for x
   x = 2,576,313,908,100/1,056,590
6. Step 6: Final answer
   x = 2,438,328.88