Finding the Third Proportional to 1,229,580 and 2,520,396

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229,580 : 2,520,396 = 2,520,396 : x
2. Step 2: Convert to fraction form
   1,229,580/2,520,396 = 2,520,396/x
3. Step 3: Cross multiply
   1,229,580x = 2,520,396 × 2,520,396
4. Step 4: Simplify right side
   1,229,580x = 6,352,395,996,816
5. Step 5: Solve for x
   x = 6,352,395,996,816/1,229,580
6. Step 6: Final answer
   x = 5,166,313.70