Finding the Third Proportional to 15,700.50 and 34,128

Step by Step Solution

1. Step 1: Write the proportion equation
   15,700.50 : 34,128 = 34,128 : x
2. Step 2: Convert to fraction form
   15,700.50/34,128 = 34,128/x
3. Step 3: Cross multiply
   15,700.50x = 34,128 × 34,128
4. Step 4: Simplify right side
   15,700.50x = 1,164,720,384
5. Step 5: Solve for x
   x = 1,164,720,384/15,700.50
6. Step 6: Final answer
   x = 74,183.65