Finding the Third Proportional to 28,680 and 43,627.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,680 : 43,627.50 = 43,627.50 : x
2. Step 2: Convert to fraction form
   28,680/43,627.50 = 43,627.50/x
3. Step 3: Cross multiply
   28,680x = 43,627.50 × 43,627.50
4. Step 4: Simplify right side
   28,680x = 1,903,358,756.25
5. Step 5: Solve for x
   x = 1,903,358,756.25/28,680
6. Step 6: Final answer
   x = 66,365.37