Finding the Third Proportional to 28,486.69 and 42,580.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,486.69 : 42,580.69 = 42,580.69 : x
2. Step 2: Convert to fraction form
   28,486.69/42,580.69 = 42,580.69/x
3. Step 3: Cross multiply
   28,486.69x = 42,580.69 × 42,580.69
4. Step 4: Simplify right side
   28,486.69x = 1,813,114,947.97
5. Step 5: Solve for x
   x = 1,813,114,947.97/28,486.69
6. Step 6: Final answer
   x = 63,647.80