Finding the Third Proportional to 28,620.50 and 42,103

Step by Step Solution

1. Step 1: Write the proportion equation
   28,620.50 : 42,103 = 42,103 : x
2. Step 2: Convert to fraction form
   28,620.50/42,103 = 42,103/x
3. Step 3: Cross multiply
   28,620.50x = 42,103 × 42,103
4. Step 4: Simplify right side
   28,620.50x = 1,772,662,609
5. Step 5: Solve for x
   x = 1,772,662,609/28,620.50
6. Step 6: Final answer
   x = 61,936.81