Finding the Third Proportional to 15,978.75 and 34,873.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,978.75 : 34,873.50 = 34,873.50 : x
2. Step 2: Convert to fraction form
   15,978.75/34,873.50 = 34,873.50/x
3. Step 3: Cross multiply
   15,978.75x = 34,873.50 × 34,873.50
4. Step 4: Simplify right side
   15,978.75x = 1,216,161,002.25
5. Step 5: Solve for x
   x = 1,216,161,002.25/15,978.75
6. Step 6: Final answer
   x = 76,111.15