Finding the Third Proportional to 5,279,380 and 8,234,574

Step by Step Solution

1. Step 1: Write the proportion equation
   5,279,380 : 8,234,574 = 8,234,574 : x
2. Step 2: Convert to fraction form
   5,279,380/8,234,574 = 8,234,574/x
3. Step 3: Cross multiply
   5,279,380x = 8,234,574 × 8,234,574
4. Step 4: Simplify right side
   5,279,380x = 67,808,208,961,476
5. Step 5: Solve for x
   x = 67,808,208,961,476/5,279,380
6. Step 6: Final answer
   x = 12,843,972.01