Finding the Third Proportional to 28,620 and 43,783.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,620 : 43,783.50 = 43,783.50 : x
2. Step 2: Convert to fraction form
   28,620/43,783.50 = 43,783.50/x
3. Step 3: Cross multiply
   28,620x = 43,783.50 × 43,783.50
4. Step 4: Simplify right side
   28,620x = 1,916,994,872.25
5. Step 5: Solve for x
   x = 1,916,994,872.25/28,620
6. Step 6: Final answer
   x = 66,980.95