Finding the Third Proportional to 28,499.63 and 42,589.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,499.63 : 42,589.88 = 42,589.88 : x
2. Step 2: Convert to fraction form
   28,499.63/42,589.88 = 42,589.88/x
3. Step 3: Cross multiply
   28,499.63x = 42,589.88 × 42,589.88
4. Step 4: Simplify right side
   28,499.63x = 1,813,897,452.52
5. Step 5: Solve for x
   x = 1,813,897,452.52/28,499.63
6. Step 6: Final answer
   x = 63,646.36