Finding the Third Proportional to 1,230,840 and 2,586,084

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230,840 : 2,586,084 = 2,586,084 : x
2. Step 2: Convert to fraction form
   1,230,840/2,586,084 = 2,586,084/x
3. Step 3: Cross multiply
   1,230,840x = 2,586,084 × 2,586,084
4. Step 4: Simplify right side
   1,230,840x = 6,687,830,455,056
5. Step 5: Solve for x
   x = 6,687,830,455,056/1,230,840
6. Step 6: Final answer
   x = 5,433,549.82