Finding the Third Proportional to 13,010.63 and 21,115.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,010.63 : 21,115.69 = 21,115.69 : x
2. Step 2: Convert to fraction form
   13,010.63/21,115.69 = 21,115.69/x
3. Step 3: Cross multiply
   13,010.63x = 21,115.69 × 21,115.69
4. Step 4: Simplify right side
   13,010.63x = 445,872,258.60
5. Step 5: Solve for x
   x = 445,872,258.60/13,010.63
6. Step 6: Final answer
   x = 34,269.86