Finding the Third Proportional to 5,402,155 and 8,240,437

Step by Step Solution

1. Step 1: Write the proportion equation
   5,402,155 : 8,240,437 = 8,240,437 : x
2. Step 2: Convert to fraction form
   5,402,155/8,240,437 = 8,240,437/x
3. Step 3: Cross multiply
   5,402,155x = 8,240,437 × 8,240,437
4. Step 4: Simplify right side
   5,402,155x = 67,904,801,950,969
5. Step 5: Solve for x
   x = 67,904,801,950,969/5,402,155
6. Step 6: Final answer
   x = 12,569,946.98