Finding the Third Proportional to 9,268.49 and 21,870.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.49 : 21,870.32 = 21,870.32 : x
2. Step 2: Convert to fraction form
   9,268.49/21,870.32 = 21,870.32/x
3. Step 3: Cross multiply
   9,268.49x = 21,870.32 × 21,870.32
4. Step 4: Simplify right side
   9,268.49x = 478,310,739.71
5. Step 5: Solve for x
   x = 478,310,739.71/9,268.49
6. Step 6: Final answer
   x = 51,606.12