Finding the Third Proportional to 10,300.50 and 21,090.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,300.50 : 21,090.38 = 21,090.38 : x
2. Step 2: Convert to fraction form
   10,300.50/21,090.38 = 21,090.38/x
3. Step 3: Cross multiply
   10,300.50x = 21,090.38 × 21,090.38
4. Step 4: Simplify right side
   10,300.50x = 444,803,917.64
5. Step 5: Solve for x
   x = 444,803,917.64/10,300.50
6. Step 6: Final answer
   x = 43,182.75