Finding the Third Proportional to 39,681 and 53,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,681 : 53,891.50 = 53,891.50 : x
2. Step 2: Convert to fraction form
   39,681/53,891.50 = 53,891.50/x
3. Step 3: Cross multiply
   39,681x = 53,891.50 × 53,891.50
4. Step 4: Simplify right side
   39,681x = 2,904,293,772.25
5. Step 5: Solve for x
   x = 2,904,293,772.25/39,681
6. Step 6: Final answer
   x = 73,191.04