Finding the Third Proportional to 5,287,224 and 8,403,240

Step by Step Solution

1. Step 1: Write the proportion equation
   5,287,224 : 8,403,240 = 8,403,240 : x
2. Step 2: Convert to fraction form
   5,287,224/8,403,240 = 8,403,240/x
3. Step 3: Cross multiply
   5,287,224x = 8,403,240 × 8,403,240
4. Step 4: Simplify right side
   5,287,224x = 70,614,442,497,600
5. Step 5: Solve for x
   x = 70,614,442,497,600/5,287,224
6. Step 6: Final answer
   x = 13,355,674.45