Finding the Third Proportional to 39,210 and 52,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,210 : 52,684.50 = 52,684.50 : x
2. Step 2: Convert to fraction form
   39,210/52,684.50 = 52,684.50/x
3. Step 3: Cross multiply
   39,210x = 52,684.50 × 52,684.50
4. Step 4: Simplify right side
   39,210x = 2,775,656,540.25
5. Step 5: Solve for x
   x = 2,775,656,540.25/39,210
6. Step 6: Final answer
   x = 70,789.51