Finding the Third Proportional to 583,830 and 1,242,990

Step by Step Solution

1. Step 1: Write the proportion equation
   583,830 : 1,242,990 = 1,242,990 : x
2. Step 2: Convert to fraction form
   583,830/1,242,990 = 1,242,990/x
3. Step 3: Cross multiply
   583,830x = 1,242,990 × 1,242,990
4. Step 4: Simplify right side
   583,830x = 1,545,024,140,100
5. Step 5: Solve for x
   x = 1,545,024,140,100/583,830
6. Step 6: Final answer
   x = 2,646,359.63