Finding the Third Proportional to 5,306,164 and 8,415,603

Step by Step Solution

1. Step 1: Write the proportion equation
   5,306,164 : 8,415,603 = 8,415,603 : x
2. Step 2: Convert to fraction form
   5,306,164/8,415,603 = 8,415,603/x
3. Step 3: Cross multiply
   5,306,164x = 8,415,603 × 8,415,603
4. Step 4: Simplify right side
   5,306,164x = 70,822,373,853,609
5. Step 5: Solve for x
   x = 70,822,373,853,609/5,306,164
6. Step 6: Final answer
   x = 13,347,189.02