Finding the Third Proportional to 28,003 and 42,589.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,003 : 42,589.50 = 42,589.50 : x
2. Step 2: Convert to fraction form
   28,003/42,589.50 = 42,589.50/x
3. Step 3: Cross multiply
   28,003x = 42,589.50 × 42,589.50
4. Step 4: Simplify right side
   28,003x = 1,813,865,510.25
5. Step 5: Solve for x
   x = 1,813,865,510.25/28,003
6. Step 6: Final answer
   x = 64,773.97