Finding the Third Proportional to 5,402,168 and 8,240,451

Step by Step Solution

1. Step 1: Write the proportion equation
   5,402,168 : 8,240,451 = 8,240,451 : x
2. Step 2: Convert to fraction form
   5,402,168/8,240,451 = 8,240,451/x
3. Step 3: Cross multiply
   5,402,168x = 8,240,451 × 8,240,451
4. Step 4: Simplify right side
   5,402,168x = 67,905,032,683,401
5. Step 5: Solve for x
   x = 67,905,032,683,401/5,402,168
6. Step 6: Final answer
   x = 12,569,959.45