Finding the Third Proportional to 538,640 and 1,166,424

Step by Step Solution

1. Step 1: Write the proportion equation
   538,640 : 1,166,424 = 1,166,424 : x
2. Step 2: Convert to fraction form
   538,640/1,166,424 = 1,166,424/x
3. Step 3: Cross multiply
   538,640x = 1,166,424 × 1,166,424
4. Step 4: Simplify right side
   538,640x = 1,360,544,947,776
5. Step 5: Solve for x
   x = 1,360,544,947,776/538,640
6. Step 6: Final answer
   x = 2,525,889.18