Finding the Third Proportional to 545,620 and 1,185,686

Step by Step Solution

1. Step 1: Write the proportion equation
   545,620 : 1,185,686 = 1,185,686 : x
2. Step 2: Convert to fraction form
   545,620/1,185,686 = 1,185,686/x
3. Step 3: Cross multiply
   545,620x = 1,185,686 × 1,185,686
4. Step 4: Simplify right side
   545,620x = 1,405,851,290,596
5. Step 5: Solve for x
   x = 1,405,851,290,596/545,620
6. Step 6: Final answer
   x = 2,576,612.46