Finding the Third Proportional to 553,840 and 1,210,180

Step by Step Solution

1. Step 1: Write the proportion equation
   553,840 : 1,210,180 = 1,210,180 : x
2. Step 2: Convert to fraction form
   553,840/1,210,180 = 1,210,180/x
3. Step 3: Cross multiply
   553,840x = 1,210,180 × 1,210,180
4. Step 4: Simplify right side
   553,840x = 1,464,535,632,400
5. Step 5: Solve for x
   x = 1,464,535,632,400/553,840
6. Step 6: Final answer
   x = 2,644,329.83