Finding the Third Proportional to 5,402,170 and 8,240,454

Step by Step Solution

1. Step 1: Write the proportion equation
   5,402,170 : 8,240,454 = 8,240,454 : x
2. Step 2: Convert to fraction form
   5,402,170/8,240,454 = 8,240,454/x
3. Step 3: Cross multiply
   5,402,170x = 8,240,454 × 8,240,454
4. Step 4: Simplify right side
   5,402,170x = 67,905,082,126,116
5. Step 5: Solve for x
   x = 67,905,082,126,116/5,402,170
6. Step 6: Final answer
   x = 12,569,963.95