Finding the Third Proportional to 8,216,970 and 12,773,994

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216,970 : 12,773,994 = 12,773,994 : x
2. Step 2: Convert to fraction form
   8,216,970/12,773,994 = 12,773,994/x
3. Step 3: Cross multiply
   8,216,970x = 12,773,994 × 12,773,994
4. Step 4: Simplify right side
   8,216,970x = 163,174,922,712,036
5. Step 5: Solve for x
   x = 163,174,922,712,036/8,216,970
6. Step 6: Final answer
   x = 19,858,283.86