Finding the Third Proportional to 16,139.25 and 34,718.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.25 : 34,718.63 = 34,718.63 : x
2. Step 2: Convert to fraction form
   16,139.25/34,718.63 = 34,718.63/x
3. Step 3: Cross multiply
   16,139.25x = 34,718.63 × 34,718.63
4. Step 4: Simplify right side
   16,139.25x = 1,205,382,921.89
5. Step 5: Solve for x
   x = 1,205,382,921.89/16,139.25
6. Step 6: Final answer
   x = 74,686.43