Finding the Third Proportional to 28,845 and 42,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,845 : 42,172.50 = 42,172.50 : x
2. Step 2: Convert to fraction form
   28,845/42,172.50 = 42,172.50/x
3. Step 3: Cross multiply
   28,845x = 42,172.50 × 42,172.50
4. Step 4: Simplify right side
   28,845x = 1,778,519,756.25
5. Step 5: Solve for x
   x = 1,778,519,756.25/28,845
6. Step 6: Final answer
   x = 61,657.82