Finding the Third Proportional to 5,218,485 and 7,962,702

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218,485 : 7,962,702 = 7,962,702 : x
2. Step 2: Convert to fraction form
   5,218,485/7,962,702 = 7,962,702/x
3. Step 3: Cross multiply
   5,218,485x = 7,962,702 × 7,962,702
4. Step 4: Simplify right side
   5,218,485x = 63,404,623,140,804
5. Step 5: Solve for x
   x = 63,404,623,140,804/5,218,485
6. Step 6: Final answer
   x = 12,150,005.82