Finding the Third Proportional to 3,148,677 and 6,521,399

Step by Step Solution

1. Step 1: Write the proportion equation
   3,148,677 : 6,521,399 = 6,521,399 : x
2. Step 2: Convert to fraction form
   3,148,677/6,521,399 = 6,521,399/x
3. Step 3: Cross multiply
   3,148,677x = 6,521,399 × 6,521,399
4. Step 4: Simplify right side
   3,148,677x = 42,528,644,917,201
5. Step 5: Solve for x
   x = 42,528,644,917,201/3,148,677
6. Step 6: Final answer
   x = 13,506,829.99