Finding the Third Proportional to 21,870 and 47,994.40

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870 : 47,994.40 = 47,994.40 : x
2. Step 2: Convert to fraction form
   21,870/47,994.40 = 47,994.40/x
3. Step 3: Cross multiply
   21,870x = 47,994.40 × 47,994.40
4. Step 4: Simplify right side
   21,870x = 2,303,462,281.38
5. Step 5: Solve for x
   x = 2,303,462,281.38/21,870
6. Step 6: Final answer
   x = 105,325.21