Finding the Third Proportional to 38,900.25 and 53,490.38

Step by Step Solution

1. Step 1: Write the proportion equation
   38,900.25 : 53,490.38 = 53,490.38 : x
2. Step 2: Convert to fraction form
   38,900.25/53,490.38 = 53,490.38/x
3. Step 3: Cross multiply
   38,900.25x = 53,490.38 × 53,490.38
4. Step 4: Simplify right side
   38,900.25x = 2,861,220,217.64
5. Step 5: Solve for x
   x = 2,861,220,217.64/38,900.25
6. Step 6: Final answer
   x = 73,552.75