Finding the Third Proportional to 28,500.13 and 42,590.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,500.13 : 42,590.50 = 42,590.50 : x
2. Step 2: Convert to fraction form
   28,500.13/42,590.50 = 42,590.50/x
3. Step 3: Cross multiply
   28,500.13x = 42,590.50 × 42,590.50
4. Step 4: Simplify right side
   28,500.13x = 1,813,950,690.25
5. Step 5: Solve for x
   x = 1,813,950,690.25/28,500.13
6. Step 6: Final answer
   x = 63,647.11