Finding the Third Proportional to 5,470,685 and 12,663,658

Step by Step Solution

1. Step 1: Write the proportion equation
   5,470,685 : 12,663,658 = 12,663,658 : x
2. Step 2: Convert to fraction form
   5,470,685/12,663,658 = 12,663,658/x
3. Step 3: Cross multiply
   5,470,685x = 12,663,658 × 12,663,658
4. Step 4: Simplify right side
   5,470,685x = 160,368,233,940,964
5. Step 5: Solve for x
   x = 160,368,233,940,964/5,470,685
6. Step 6: Final answer
   x = 29,314,104.90