Finding the Third Proportional to 6,423,980 and 13,906,454

Step by Step Solution

1. Step 1: Write the proportion equation
   6,423,980 : 13,906,454 = 13,906,454 : x
2. Step 2: Convert to fraction form
   6,423,980/13,906,454 = 13,906,454/x
3. Step 3: Cross multiply
   6,423,980x = 13,906,454 × 13,906,454
4. Step 4: Simplify right side
   6,423,980x = 193,389,462,854,116
5. Step 5: Solve for x
   x = 193,389,462,854,116/6,423,980
6. Step 6: Final answer
   x = 30,104,306.50