Finding the Third Proportional to 15,560 and 34,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,560 : 34,143.50 = 34,143.50 : x
2. Step 2: Convert to fraction form
   15,560/34,143.50 = 34,143.50/x
3. Step 3: Cross multiply
   15,560x = 34,143.50 × 34,143.50
4. Step 4: Simplify right side
   15,560x = 1,165,778,592.25
5. Step 5: Solve for x
   x = 1,165,778,592.25/15,560
6. Step 6: Final answer
   x = 74,921.50