Finding the Third Proportional to 15,640.31 and 34,034.63

Step by Step Solution

1. Step 1: Write the proportion equation
   15,640.31 : 34,034.63 = 34,034.63 : x
2. Step 2: Convert to fraction form
   15,640.31/34,034.63 = 34,034.63/x
3. Step 3: Cross multiply
   15,640.31x = 34,034.63 × 34,034.63
4. Step 4: Simplify right side
   15,640.31x = 1,158,355,698.89
5. Step 5: Solve for x
   x = 1,158,355,698.89/15,640.31
6. Step 6: Final answer
   x = 74,062.18