Finding the Third Proportional to 28,620.75 and 42,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,620.75 : 42,103.50 = 42,103.50 : x
2. Step 2: Convert to fraction form
   28,620.75/42,103.50 = 42,103.50/x
3. Step 3: Cross multiply
   28,620.75x = 42,103.50 × 42,103.50
4. Step 4: Simplify right side
   28,620.75x = 1,772,704,712.25
5. Step 5: Solve for x
   x = 1,772,704,712.25/28,620.75
6. Step 6: Final answer
   x = 61,937.74