Finding the Third Proportional to 6,419,178 and 9,971,643

Step by Step Solution

1. Step 1: Write the proportion equation
   6,419,178 : 9,971,643 = 9,971,643 : x
2. Step 2: Convert to fraction form
   6,419,178/9,971,643 = 9,971,643/x
3. Step 3: Cross multiply
   6,419,178x = 9,971,643 × 9,971,643
4. Step 4: Simplify right side
   6,419,178x = 99,433,664,119,449
5. Step 5: Solve for x
   x = 99,433,664,119,449/6,419,178
6. Step 6: Final answer
   x = 15,490,092.99