Finding the Third Proportional to 28,687.50 and 67,830.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,687.50 : 67,830.75 = 67,830.75 : x
2. Step 2: Convert to fraction form
   28,687.50/67,830.75 = 67,830.75/x
3. Step 3: Cross multiply
   28,687.50x = 67,830.75 × 67,830.75
4. Step 4: Simplify right side
   28,687.50x = 4,601,010,645.56
5. Step 5: Solve for x
   x = 4,601,010,645.56/28,687.50
6. Step 6: Final answer
   x = 160,383.81