Finding the Third Proportional to 3,148,718 and 6,521,500

Step by Step Solution

1. Step 1: Write the proportion equation
   3,148,718 : 6,521,500 = 6,521,500 : x
2. Step 2: Convert to fraction form
   3,148,718/6,521,500 = 6,521,500/x
3. Step 3: Cross multiply
   3,148,718x = 6,521,500 × 6,521,500
4. Step 4: Simplify right side
   3,148,718x = 42,529,962,250,000
5. Step 5: Solve for x
   x = 42,529,962,250,000/3,148,718
6. Step 6: Final answer
   x = 13,507,072.48