Finding the Third Proportional to 5,615,606 and 8,688,009

Step by Step Solution

1. Step 1: Write the proportion equation
   5,615,606 : 8,688,009 = 8,688,009 : x
2. Step 2: Convert to fraction form
   5,615,606/8,688,009 = 8,688,009/x
3. Step 3: Cross multiply
   5,615,606x = 8,688,009 × 8,688,009
4. Step 4: Simplify right side
   5,615,606x = 75,481,500,384,081
5. Step 5: Solve for x
   x = 75,481,500,384,081/5,615,606
6. Step 6: Final answer
   x = 13,441,381.11