Finding the Third Proportional to 39,645 and 54,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,645 : 54,607.50 = 54,607.50 : x
2. Step 2: Convert to fraction form
   39,645/54,607.50 = 54,607.50/x
3. Step 3: Cross multiply
   39,645x = 54,607.50 × 54,607.50
4. Step 4: Simplify right side
   39,645x = 2,981,979,056.25
5. Step 5: Solve for x
   x = 2,981,979,056.25/39,645
6. Step 6: Final answer
   x = 75,217.03