Finding the Third Proportional to 10,109.81 and 21,373.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.81 : 21,373.88 = 21,373.88 : x
2. Step 2: Convert to fraction form
   10,109.81/21,373.88 = 21,373.88/x
3. Step 3: Cross multiply
   10,109.81x = 21,373.88 × 21,373.88
4. Step 4: Simplify right side
   10,109.81x = 456,842,532.52
5. Step 5: Solve for x
   x = 456,842,532.52/10,109.81
6. Step 6: Final answer
   x = 45,188.03