Finding the Third Proportional to 15,478.50 and 23,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,478.50 : 23,218.50 = 23,218.50 : x
2. Step 2: Convert to fraction form
   15,478.50/23,218.50 = 23,218.50/x
3. Step 3: Cross multiply
   15,478.50x = 23,218.50 × 23,218.50
4. Step 4: Simplify right side
   15,478.50x = 539,098,742.25
5. Step 5: Solve for x
   x = 539,098,742.25/15,478.50
6. Step 6: Final answer
   x = 34,828.88