Finding the Third Proportional to 2,978,880 and 6,430,068

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978,880 : 6,430,068 = 6,430,068 : x
2. Step 2: Convert to fraction form
   2,978,880/6,430,068 = 6,430,068/x
3. Step 3: Cross multiply
   2,978,880x = 6,430,068 × 6,430,068
4. Step 4: Simplify right side
   2,978,880x = 41,345,774,484,624
5. Step 5: Solve for x
   x = 41,345,774,484,624/2,978,880
6. Step 6: Final answer
   x = 13,879,637.48